JP2007329223A - High voltage transformer - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the following problems: a height from a surface of a printed board to a top of a conventional high voltage transformer 580 is large when the transformer is mounted on the printed board of a set; and the high voltage transformer and a core are provided at right angle so that an outer diameter of the body of the transformer is large. <P>SOLUTION: The high voltage transformer includes: a coil having a coil bobbin comprising a wire wound around an axis of a core fitted; and a component block including a plurality of diodes connected with initial and terminal ends of the wire and a plurality of electronic components connected with the terminal end of the high voltage generated by the wire. The coil, the diode and the block are accommodated in an approximately square-shaped exterior case, and a transformer body equipped with the component block, a diode holder, and the coil is provided on a position opposite to a leg of the core. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a configuration of a high-voltage transformer that supplies a DC high voltage.

  The structure of a conventional high voltage generating transformer (Patent Document 1) will be described with reference to the drawings.

  FIG. 7 is a plan view and a side view of a conventional high voltage transformer.

  In FIG. 7, a high voltage transformer 580 has a configuration in which a coil portion 505, a diode holder 530, and a hocus volume 570 are combined and housed in a substantially cylindrical outer case 540 formed of plastic resin and filled with an insulating resin. ing.

  More specifically, the high voltage transformer 580 includes a primary coil bobbin 510 fitted around the axis of the core 500, a primary winding is wound around the primary coil bobbin 510, and a secondary coil bobbin 510 is wound around the outer periphery of the primary coil bobbin 510. The secondary coil bobbin 520 is fitted and the secondary coil bobbin 520 is divided into a plurality of secondary windings, and each divided secondary winding portion is alternately arranged with an insulating film. And a diode holder 530 equipped with a plurality of diodes 531, a high-voltage connection fitting 532 and a protective resistor 575, and a focus volume 570 equipped with a high-voltage capacitor 571 and a high-voltage resistor 572. It has become.

  In the substantially cylindrical outer case 540, the center of the outer case circumferential portion 542 other than the mounting portion of the hocus volume 570 is the same as the center of the coil portion 505, and the outer case circumferential portion 542 and the coil portion 505 are concentric. The distance from the secondary winding of the secondary coil bobbin 520 to the inner surface of the outer case circumferential portion 542 is an equal distance.

A low voltage terminal pin 550 is disposed on the primary coil bobbin 510 from the outer case opening 543 of the high voltage transformer 580, and the low voltage terminal pin 550 is inserted into a hole of the printed circuit board 560 and electrically connected thereto. Conventionally, the high voltage transformer 580 is used in a color television receiver using a cathode ray tube or a display device used in a computer terminal, and is arranged vertically on the printed circuit board 560. The height from 560 to the top of the high voltage transformer 580 is high. Furthermore, the transformer main body and the core 500 provided with the diode holder 530 with the diode 531 mounted are arranged in a perpendicular direction when viewed in plan, and the outer diameter of the main body of the high voltage transformer 580 is increased.

  A high-voltage capacitor 571 and a hocus volume 570 provided with a high-voltage resistor 572 are mounted and fixed to the exterior case side opening 541, and a transformer between the high-voltage capacitor 571 and the high-voltage resistor 572, the diode holder 530, and the diode 531. Although the insulation distance from the inside of the main body can be secured, the high voltage components such as the high voltage capacitor 571 and the high voltage resistor 572 are fixed in direct contact with the hocus volume case 574.

  The connection between the high-voltage terminal portion of the transformer body composed of the primary side coil bobbin 510, the secondary side coil bobbin 520 and the diode holder 530 and each component provided in the hocus volume 570 is attached to the diode holder 530. The high voltage connection fitting 532 is connected by inserting the high voltage connection pin 573 mounted on the hocus volume 570, and the diode holder 530 is mounted on the primary coil bobbin 510 and the secondary coil bobbin 520, A structure in which the high-voltage connection pin 573 of the hocus volume 570 can be connected to the high-voltage connection fitting 532 of the diode holder 530 by inserting the hocus volume 570 into the side case opening 541 of the outer case after being stored in the substantially cylindrical outer case 540. It has become.

  FIG. 8 is a circuit diagram of a conventional high voltage transformer.

  In FIG. 8, a high voltage transformer 580 includes a core 500, a primary winding 511, a secondary winding 521, a diode 531, and a protective resistor 575 to form a transformer body. The inside of the broken line is a part constituting the hocus volume 570. The hocus volume 570 is provided with a high voltage capacitor 571 and a high voltage resistor 572.

  In a flyback transformer used for a display device device using a cathode ray tube, the current flowing through the protective resistor 575 is a small current of 2 to 3 mA, and thus the protective resistor 575 has a shape substantially equivalent to that of the diode 531. In many cases, the diode holder 530 is mounted together with the diode 531 and the size of the high voltage transformer 580 is hardly affected.

  The structure of a conventional converter transformer (Patent Document 2) will be described with reference to the drawings.

  FIG. 9 is a sectional view and bottom view of a conventional converter transformer.

  In FIG. 9, a transbobbin 120 is disposed on the outer periphery of a core 910, and primary and secondary windings 130 are wound around the transbobbin 120. The primary and secondary windings 130 are The insulating structure is such that the interlayer insulating tape 132 is wound so as to come into contact.

  Further, the transformer bobbin 120 protrudes below the transformer terminal pin 140 from the lower surface. The transformer terminal pin 140 is soldered and joined to the through hole 202 of the printed circuit board 200 on which the primary side circuit component 210 and the secondary side circuit component 220 are mounted and electrically wired, thereby forming a transformer body.

  The transformer body is inserted into an insulating case 950 having a substantially square shape, and the insulating case 950 is filled with an insulating filler 400.

Further, the transformer terminal pin 140 housed in the insulating case 950 is joined to the through hole 802 of the mount substrate 800 by soldering from below the opening of the insulating case 950.
JP 2001-176727 A JP 2000-060125 A

  Conventional Example FIG. 7 shows a schematic configuration as seen from the plane and side when a high voltage transformer 580 is mounted on a printed circuit board 560. In the configuration of the conventional example, the high voltage transformer 580 is arranged in the longitudinal direction of the primary coil bobbin 510, that is, in the vertical direction of the printed circuit board 560, and the high voltage transformer 580 is mounted on the printed circuit board 560 of the set. The problem that the height dimension from the surface of the printed circuit board 560 to the apex of the high voltage transformer 580 becomes large, and the high voltage transformer 580 and the core 500 are arranged in a perpendicular direction, and the outer diameter of the main body of the high voltage transformer There is also a problem that becomes larger.

  For example, when the high voltage transformer 580 is used for a thin television, the printed circuit board 560 of the thin television set is vertically arranged, which causes a problem that the depth dimension of the television becomes large. However, the voltage at the bottom of the high voltage transformer 580 that contacts the printed circuit board 560 is low, and there is no need to consider the insulation distance from the printed circuit board 560.

  However, the high-voltage transformer 580 has a structure in which the outer case circumferential portion 542 has a uniform insulation distance from the coil portion 505, and the hocus volume case 574 has a structure in which high-voltage components such as a high-voltage capacitor 571 and a high-voltage resistor 572 are directly fixed. The insulation distance between the internal components of the transformer main body and the high voltage components of the hocus volume 570 is secured, but the hocus volume case 574 has variations in the expansion coefficient, adhesion, etc. of the epoxy resin filled in the transformer. There is a concern that the interface between the epoxy resin and the holding portion of the internal high-voltage component attached to the hocus volume 570 may be peeled off and leaked from the high voltage portion of the high voltage portion component to the surface of the hocus volume case 574.

  The creepage distance between the high-pressure part and the hocus volume case 570 is designed with sufficient consideration, but if a substance that inhibits the adhesion with the epoxy resin adheres to the hocus volume case 570, etc. It is expected that high-pressure leakage will occur along the interface between the holding portion of the high-pressure component of the hocus volume 570 and the epoxy resin.

  Therefore, the printed circuit board 560 of the display device device on which the high voltage transformer 580 is mounted is often mounted with electrical components separated from the periphery of the high voltage transformer 580 by a certain spatial distance. In the case of a flyback transformer used in a display device apparatus using a cathode ray tube, the generated voltage is as high as about 20 kV to about 30 kV, so the spatial distance from the flyback transformer, which is a high voltage transformer, to the peripheral parts is reduced. In some cases, the length is 10 mm to about 15 mm, and there is a problem that the printed circuit board 560 must be enlarged.

  When the shape of the hocus volume 570 is strong and attached to the side opening 541 of the substantially cylindrical outer case 540, molding distortion occurs in the substantially cylindrical outer case 540 itself. By mounting, the distortion of the substantially cylindrical outer case 540 is eliminated, and the insulation distance between the high voltage portion such as the secondary winding inside the high voltage transformer 580 and the diode 531 and the substantially cylindrical outer case 540 can be secured. There are advantages.

  However, the connection between the high voltage terminal portion of the transformer main body and each component provided in the hocus volume 570 is performed by connecting the high voltage connection pin 532 mounted on the diode holder 530 to the high voltage connection pin mounted on the hocus volume 570. 573 is inserted and connected, and after assembling the transformer main body to the substantially cylindrical outer case 540, the hocus volume 570 is mounted on the side opening 541 of the outer case, and the high-voltage connection pin 573 of the hocus volume 570 is The high voltage connection fitting 532 of the diode holder 530 can be connected. However, when the hocus volume 570 is mounted on the substantially cylindrical outer case 540, the inside of the transformer body cannot be visually confirmed. If the dimensions of 573 vary, It is expected to be poor connection of the body and Ho Kas volume 570.

  Further, the high-voltage connection fitting 532 is formed by processing a plate-like metal, and has a shape for holding the high-voltage connection fitting 532 on the diode holder 530 and a shape for facilitating the insertion of the high-voltage connection pin 573. Considering this, the shape becomes complicated, and the part price and mold cost may increase.

  Conventional Converter The transformer of FIG. 9 has an insulating case 950 in which a printed circuit board 200 on which a primary circuit component 210 and a secondary circuit component 220 are mounted and electrically wired is positioned between the transbobbin 120 and the mount substrate 800. Since it is provided, there is a problem that the height from the mount substrate 800 to the top surface of the substantially square insulating case 950 is increased.

  The present application solves the above problems, and can reduce the height direction of the high-voltage transformer (from the printed circuit board to the top of the transformer) without greatly changing the conventional component configuration. An object is to provide a high voltage transformer capable of reducing the outer diameter.

  In order to solve the above-described conventional problems, a high-voltage transformer according to the present invention includes a coil portion fitted with a coil bobbin in which a winding is wound around a core axis, and a plurality of windings connected to the start and end of the winding. A diode holder having a diode mounted thereon and a component block having a plurality of electronic components connected to a high voltage termination generated by the winding, the coil portion, the diode holder and the component block having a substantially square shape The transformer body housed in the outer case and provided with the component block, the diode holder, and the coil portion is to be disposed at a position facing the leg portion of the core.

  In addition, the high voltage transformer of the present invention is configured by arranging the input / output terminal pins of the coil section and the input / output terminal pins of each electronic component arranged in the component block in a straight line above the opening surface of the substantially square shape outer case. is there.

  In the high voltage transformer of the present invention, the high-voltage protection resistor disposed on the component block is housed in a substantially rectangular portion protruding from the top surface of the substantially rectangular outer case.

  With this configuration, the high-voltage transformer becomes a substantially square-shaped high-voltage transformer, and the thickness is reduced.

  In addition, the high voltage transformer of the present invention includes a hollow hole provided in the diode holder, a protrusion provided in the component block in a substantially square hole, and an L-shaped rib having an engagement portion at the tip. is there.

  With this configuration, the position of the component block mounted on the diode holder is fixed, and the insulation distance between the electronic component disposed on the component block and the outer case can be stably secured.

  In addition, the high voltage transformer of the present invention has a secondary coil bobbin in which a terminal pin whose tip is cut at an acute angle is arranged at a high voltage termination part, and an electronic component lead at the high voltage termination part is embedded in the secondary coil bobbin. A diode holder that is mounted so as to be substantially parallel to the terminal pin that is cut at an acute angle, and a conductive rubber having a substantially cylindrical shape and a concave dished side surface is mounted on the component block, and is connected to the high voltage terminal When the component block on which the electronic component is mounted is combined with the diode holder mounted on the coil bobbin and the component block, the terminal pin whose tip of the secondary coil bobbin is cut at an acute angle pierces the conductive rubber of the component block It is arranged to allow electrical connection.

  With this configuration, manufacturing of a high-voltage transformer is facilitated, quality reliability is improved, and cost of parts can be reduced.

  According to the high voltage transformer of the present invention, the coil portion, the diode holder, and the component block are arranged in a substantially square shape in a plan view and housed in a substantially rectangular shape case, and the input / output terminal pins of the coil portion and the component block The input / output terminal pins of each electronic component placed in the above are arranged in a straight line at the upper part of the substantially square-shaped exterior case opening surface, and are further placed at positions facing the leg portions of the core, thereby increasing the thickness of the high-voltage transformer. Can provide a transformer having a thin and substantially square shape.

  Further, according to the high voltage transformer of the present invention, when a large current is passed through the high voltage transformer, the high voltage protection resistor generates heat, and it is necessary to separate the high voltage protection resistor from the transformer body. By storing the placed high-voltage protection resistor in a substantially square-shaped part protruding from the top surface of the substantially square-shaped outer case, the high-voltage transformer can be deployed without changing the thickness of the high-voltage transformer. A transformer having a substantially square shape with a small thickness can be provided.

  According to the high voltage transformer of the present invention, the hollow hole provided in the diode holder, the protrusion provided in the component block in the substantially square hole, and the L-shaped rib having the engaging portion at the tip are attached. In addition to ensuring a stable insulation distance between the high-voltage part mounted on the component block and the exterior case, the high-voltage component placed on the component block is not in direct contact with the exterior case. An insulation epoxy resin is filled between the voltage component and the outer case, so that the insulation is improved.

  Furthermore, since the variation in the insulation distance is reduced, there is a possibility of reducing the thickness of the transformer, and the height direction of the high voltage transformer (from the printed board to the top of the transformer) can be reduced.

  Since the diode holder with the diode and the component block that consolidates the high-voltage capacitor and other resistors have different configurations, when connecting the diode holder and the component block when assembling the transformer, the connection part can be visually confirmed and manufactured. Making things easier.

  Conductive rubber with a cylindrical body on both sides of the transformer, with the high-voltage end of the transformer body and the component block connected to the component block, and a terminal with a sharp cut at the tip embedded in the secondary coil bobbin By using the pins, it becomes easy to connect the high voltage part of the transformer main body and the high voltage part of the component block part, and it is possible to reduce the price of the components and molds of the high voltage connection part.

  Hereinafter, the best mode for carrying out the present invention will be described with reference to the drawings.

(Embodiment 1)
FIG. 1 is a schematic diagram of a high-voltage transformer according to Embodiment 1 of the present invention.

  In FIG. 1, a high voltage transformer 310 according to Embodiment 1 of the present invention is a substantially square-shaped exterior that is formed of a plastic resin by combining three components of a coil unit 300, a diode holder 45, and a component block 100. The case 240 is configured to be filled with an insulating resin.

  In the high voltage transformer 310, a coil part 300, a diode holder 45, and a part block 100, each of which is composed of a plurality of parts, are housed in a substantially square shape outer case 240 in a straight line as shown in FIG. The high-voltage transformer 310 is disposed so as to face the coil unit 300 with the diode holder 45 as the center, and the coil unit 300, the diode holder 45, and the component block 100 are arranged in a substantially square shape when viewed in a plan view, There is no.

  Further, the coil unit 300, the diode holder 45, and the component block 100 of the high voltage transformer 310 according to the first embodiment will be described in detail with reference to FIGS. 3, 4, and 5. FIG.

  FIG. 3 is a detailed view in which a diode holder is mounted on the coil portion of the high-voltage transformer according to Embodiment 1 of the present invention.

  In FIG. 3, the coil unit 300 includes a primary coil bobbin 25, a primary winding 20, an input / output terminal 254, a secondary coil bobbin 35, a secondary winding 30, a terminal pin 210, and an acute angle terminal pin 211 having a sharp tip. It is configured.

  The coil unit 300 has the primary coil bobbin 25 fitted around the axis of the core 10, the primary winding 20 is wound around the primary coil bobbin 25, and the secondary coil bobbin 35 is fitted to the outer periphery of the primary coil bobbin 25. The secondary winding 30 is divided into a plurality of parts and wound around the secondary coil bobbin 35, and each divided secondary winding part is arranged alternately with an insulating film. Has been. The terminal end of the secondary winding 30 is wound around a terminal pin 210 embedded in the secondary coil bobbin terminal block 38 and connected to the diode 40 provided in the diode holder 45. Further, an acute-angle terminal pin 211 having an acute tip is embedded in the vicinity of the high-voltage terminal portion of the secondary coil bobbin 35.

  FIG. 4 is a detailed view of the diode holder of the high-voltage transformer in the first embodiment of the present invention. 4A is a schematic cross-sectional view of the diode holder, and FIG. 4B is a cross-sectional view taken along the line XX in the direction of the arrow X in FIG.

  In FIG. 4, the diode holder 45 includes a diode holder substrate 42 and a plurality of diodes 40.

  The diode holder 45 includes a plurality of diodes 40 having lead wires 41 connected to the start and end of each winding of the secondary winding 30 of the coil unit 300 between the plurality of diode holder protrusions 43. Yes. And the diode holder 45 is arrange | positioned facing the core square leg part 11 which does not fit the coil part 300 centering on the coil part 300 like FIG.

  The diode holder substrate 42 is provided with a secondary side coil bobbin fixing rib 47 of the diode holder 45, a diode holder engaging portion 48, a diode holder hollow hole 46, and a diode holder substantially square hole 49.

  FIG. 5 is a detailed view of a component block of the high-voltage transformer in the first embodiment of the present invention.

  5 (a) is a plan view, FIG. 5 (b) is a back view of FIG. 5 (a), and FIG. 5 (c) is a bottom view of FIG. 5 (b).

  In FIG. 5, the component block 100 includes a component block substrate 110, a first high voltage capacitor 50, a second high voltage capacitor 55, a first ceramic substrate resistor 60, a second ceramic substrate resistor 65, and a high voltage protection. It consists of resistors 70 and 75 and conductive rubber 230.

  The component block 100 includes a first ceramic substrate resistor 60 and a second ceramic substrate resistor 65 in which a resistor is printed on a ceramic substrate connected to a high voltage termination generated by the secondary winding 30 of the coil unit 300. The first high-voltage capacitor 50, the second high-voltage capacitor 55, and a plurality of electronic components are arranged separately from the diode holder 45 on both sides of a plate-shaped component block substrate 110 formed of a plastic material. The component block substrate 110 is arranged in a substantially square shape in accordance with the size of each electronic component, and an engagement portion and a concavo-convex portion are integrally formed on both surfaces of the plastic substrate so that each electronic component can be held. It is configured to be blocked by mounting and fixing a substrate resistor, a capacitor, or the like.

  Then, the component block 100 is disposed so as to face the coil unit 300 with the diode holder 45 as the center as shown in FIG. 1, and the coil unit 300, the diode holder 45, and the component block 100 have a substantially square shape when viewed in plan. The transformer body is arranged.

  In FIG. 5, the lead wire 52 of the first high-voltage capacitor 50 passes through the board cutout portion 180 of the component block board 110 and is input / output embedded in the board terminal block 142 disposed on the back surface of the component block board 110. It is connected to the terminal pin 253. The ground lead wire 61 of the first ceramic substrate resistor 60 is connected to the input / output terminal pin 252 embedded in the substrate terminal block 141 disposed on the back surface of the component block substrate 110. The ground lead wire 66 of the second ceramic substrate resistor 65 is connected to an input / output terminal pin 252 embedded in the substrate terminal block 141 disposed on the back surface of the component block substrate 110. Further, other electrical components are similarly connected to input / output terminal pins 250 embedded in the board terminal block 141 disposed on the back surface of the component block board 110. Here, the board terminal blocks 141 and 142 and the input / output terminal pins 250, 252, and 253 are arranged in a line.

  The input / output terminal pins 250, 252 and 253 have a structure extending to the outside of the substantially square-shaped exterior case side surface 241 as shown in FIG. The substantially square-shaped exterior case 240 has a substantially square-shaped exterior case opening notch 245 formed at a certain interval in a row at the end of the substantially square-shaped exterior case opening surface upper part 242. Also, the input / output terminal pins 254 provided on the primary coil bobbin 25 of the coil unit 300 extend to the outside of the substantially square-shaped exterior case side surface 241 and are the same as the input / output terminal pins 250, 252 and 253 of the component block 100. Are arranged in a line.

  Therefore, when the coil unit 300, the diode holder 45, and the component block 100 are assembled and then inserted into the substantially rectangular outer case 240, the input / output terminal pins 250, 252, and 253 and the input / output terminal pins 254 of the primary coil bobbin 25 are It has a structure in which it fits in a substantially square shape outer case opening cutout 245 and is fixed in position.

  According to such a configuration, the coil portion, the diode holder, and the component block are accommodated in the substantially square-shaped outer case, and the component block, the diode holder, and the transformer main body can be disposed at a position facing the core square leg portion. The input / output terminal pins of each part and the input / output terminal pins of each electronic component arranged in the component block can be arranged in a straight line at the upper end of the substantially square-shaped exterior case opening surface. Pins can be protruded, the thickness of the high voltage transformer is reduced, and the transformer becomes a substantially square shape. The terminal pins to be inserted into the printed circuit board are arranged in a straight line in the horizontal direction of the high voltage transformer. Can be easily inserted into the printed circuit board.

  Furthermore, the dimension of the high voltage transformer in the height direction (from the printed circuit board to the top of the transformer) can be reduced, and in the case of a thin television using the high voltage transformer, the depth dimension of the television can be reduced.

(Embodiment 2)
In FIG. 4, a diode holder substrate 42 for holding the diode 40 has a plurality of diode holder protrusions 43 integrally formed at equal intervals and a secondary coil bobbin for securing an insulation distance and holding and fixing the diode. A secondary coil bobbin fixing rib 47 extended from the diode holder substrate 42 and a diode holder engaging portion 48 on the side of the extended rib are formed to fix the position relative to the diode holder.

  Further, as shown in FIG. 3, the secondary coil bobbin 35 has a secondary side coil bobbin concave portion 36 in which a part of the flange of the secondary side coil bobbin 35 is cut out and a part of the side surface of the base holding the terminal. A coil bobbin engaging portion 37 is formed, a secondary side coil bobbin fixing rib 47 of the diode holder substrate 42 is inserted into the secondary side coil bobbin recess 36, and the diode holder engaging portion 48 and the secondary side coil bobbin engaging portion 37. Is configured to be mounted.

  The secondary coil bobbin 35 is provided with a secondary coil bobbin terminal block 38, which fixes the winding start and end windings of the secondary winding 30 and electrically connects the lead wire 41 of the diode 40. A plurality of secondary side coil bobbin terminal pins 210 are embedded.

  The component block 100 includes a first ceramic substrate resistor 60, a second ceramic substrate resistor 65, a first high voltage capacitor 50, and the like connected to a high voltage termination generated by the secondary winding as shown in FIG. An electronic component such as the second high-voltage capacitor 55 has a configuration in which the electronic component such as the second high-voltage capacitor 55 is arranged in a substantially square shape when viewed in plan on both surfaces of a plate-shaped component block substrate 110 formed of a plastic material. The high-voltage capacitor 50 and the second high-voltage capacitor 55 have engagement parts 135 for fixing a high-voltage capacitor at the tip thereof arranged on the component block substrate 110, and the first ceramic substrate resistor 60 and the second ceramic substrate resistance. In the device 65, the ceramic substrate resistor fixing engaging portions 143 and 146 are disposed on the component block substrate 110, and the component block substrate projecting portion 150 has an engaging portion at the tip. Plate L-shaped rib 151 is formed in the component block substrate 110, the components are deployed, each part has a structure in which position can be maintained.

  The component block substrate 110 protrudes in the vicinity of the center of the side surface so that the substrate protrusion 150 and the substrate protrusion 150 in the same direction as the substrate protrusion 150 in the same direction as the substrate protrusion 150, and the substrate L-shaped rib 151. Both ends have L-shaped tip engaging portions 152 in the outward direction.

  In the diode holder substrate 42, a diode holder hollow hole 46 is integrally formed in the vicinity of the center of the surface opposite to the surface on which the diode 40 is mounted, and the diode holder is substantially formed on the end surface portions on both side surfaces on the side where the diode 40 is disposed. A square hole 49 is formed.

  A substrate protrusion 150 near the center of the side surface of the component block substrate 110 is fitted into the diode holder hollow hole 46, and the L shape of the component block substrate 110 is inserted into the diode holder substantially square holes 49 on both end surfaces of the diode holder substrate 42. Since the shape tip engaging portion 152 is inserted and fixed in position as shown in FIG. 1, the diode 40 mounted on the diode holder substrate 42 and the first high-voltage capacitor 50 mounted on the component block substrate 110. The position of the second high-voltage capacitor 55, the first ceramic substrate resistor 60, and the second ceramic substrate resistor 65 can be held.

  The secondary coil bobbin 35 is fitted to the primary coil bobbin 25, the diode holder 45 is fitted to the secondary winding 30, and the component block 100 is further fitted. When viewed, the secondary coil bobbin 25 and the diode holder 45 are interposed between the primary coil bobbin 25 and the component block 100. For this reason, the insulation distance between the component block 100 and the inner wall of the substantially square-shaped exterior case 240 is a factor provided in the component block 100 and the diode holder 45 even when variations in dimensions and molding distortion of each molded product occur. Insulation dimensions are secured because the position is fixed by the joint.

  Further, the positioning rib 112 provided on the end face of the component block board is inserted into the side recess groove 243 of the substantially square-shaped outer case 240 as shown in FIG. 1, and the position of the component block 100 is fixed further. The structure is such that the positions of the diode holder 45 and the component block 100 in the substantially square outer case 240 are fixed.

  FIG. 2 is a partially enlarged view of FIG. 1 showing a schematic diagram of the high-voltage transformer in the first embodiment of the present invention.

  FIG. 2 is an enlarged view of a high voltage connecting portion of the secondary coil bobbin 35, the component block 100, and the diode holder 45. FIG.

  In FIG. 2, the secondary coil bobbin terminal block 38 disposed on the secondary coil bobbin 35 is provided with an acute angle terminal pin 211 whose tip is cut at an acute angle at the high voltage terminal portion of the secondary coil bobbin 35. ing. In addition, the lead wire 41 of the high-voltage terminal diode 40 mounted on the diode holder substrate 42 is disposed so as to be substantially parallel to the acute-angle terminal pin 211 embedded in the secondary coil bobbin terminal block 38.

  Further, the component block substrate 110 is provided with a conductive rubber 230 having a substantially cylindrical shape and a side surface having a concave dish shape. The lead wire 41 of the high-voltage terminal diode 40 and the acute-angle terminal pin 211 of the secondary coil bobbin 35 are electrically connected by soldering, and the acute-angle terminal pin 211 of the secondary coil bobbin 35 is pierced by the conductive rubber 230. Are electrically connected. This is because when the component block 100 is combined with the diode holder 45 mounted on the secondary coil bobbin 35, the acute angle terminal pin 211 of the secondary coil bobbin 35 pierces the conductive rubber 230 of the component block 100, thereby enabling electrical connection. It has a structure that can be done.

  The side surface of the conductive rubber 230, that is, the surface in the direction of the coil portion 100, is formed with a dish-shaped recess 232 so that it can be easily pierced even if the tip of the acute-angle terminal pin 211 of the secondary coil bobbin 35 varies. . Since the conductive rubber 230 has a columnar side surface with a dish-like recess, it has a simple structure for manufacturing, and there is a high possibility that the mold cost and the part price can be reduced. The component block 100 also has a conductive rubber frame 131 that can hold the position of the conductive rubber 230, and a conductive rubber for making the conductive rubber 230 difficult to come off once the conductive rubber 230 is inserted into the conductive rubber frame 131. A frame engaging portion 132 is provided.

  Further, when the variation in the dimension of the tip of the acute-angle terminal pin 211 of the secondary coil bobbin 35 is small, there is no problem even if the conductive rubber 230 has a cylindrical shape and no side dish-shaped recess. At this time, the mold cost of the conductive rubber 230 and the price of parts can be further reduced.

  According to such a configuration, the diode holder hollow hole integrally formed in the vicinity of the center and the diode holder substantially square hole on both sides on which the diode is arranged are formed on the substrate protrusion in the vicinity of the center and in the vicinity of the center of the side surface. The component block formed with the substrate L-shaped rib having the L-shaped tip engaging portion so that the protrusions are opposed to each other is mounted, and is substantially the same as the component of the high-voltage unit mounted on the component block. A stable insulation distance between the square-shaped exterior cases can be secured, and high-voltage components are not in direct contact with the substantially square-shaped exterior cases. Insulating epoxy is filled with insulating epoxy resin. Furthermore, since the variation in the insulation distance is reduced, there is a possibility of reducing the thickness of the transformer.

  Furthermore, since the diode holder equipped with the diode and the component block in which the high-voltage capacitor and other resistors are aggregated are separate, when connecting the diode holder and the component block by assembling the transformer body, the connection part can be visually confirmed. Making things is easy. In addition, by using conductive rubber with a metal fitting from the metal fitting as the connecting part of the high voltage part on the concave plate on both sides of the cylinder, the high voltage part of the coil part and the high pressure part of the component block part can be easily connected. The price of parts and molds can be reduced.

(Embodiment 3)
FIG. 5 shows the first high-voltage capacitor 50 and the second high-voltage capacitor that are electrically connected from the conductive rubber 230 connected to the acute-angle terminal pin 211 that is the high-voltage terminal portion of the secondary coil bobbin 35 in the component block 100. 55, the arrangement of the first ceramic substrate resistor 60, the second ceramic substrate resistor 65, the high-voltage protection resistors 70 and 75, and other components.

  Since the high voltage protection resistors 70 and 75 have a high resistance value of 5 kΩ to 20 kΩ, the resistance heat generation increases when a large current of 5 mA to 15 mA flows through the high voltage transformer 310 and is mounted on the component block 100. There is a possibility that the component 40, the diode 40 mounted on the diode holder 45, the primary winding 20 and the secondary winding 30 of the coil unit 300 may be affected. Originally, the high-voltage protection resistor may be a single resistor, but in order to dissipate heat against the resistance heat generation, the number of the high-voltage protection resistors is two, as in the high-voltage protection resistors 70 and 75. It is also conceivable to use four resistors and connect two parallel resistors in series.

  Furthermore, the present invention describes a method for increasing the distance from the peripheral components in order to reduce the influence of the peripheral components on the temperature.

  In the component block 100, components are arranged on both surfaces of a plate-shaped component block substrate 110 molded of plastic. More specifically, in the component block substrate 110, the high-voltage protection resistors 70 and 75 are mounted on both upper surfaces, and the first ceramic substrate resistor 60 and the second ceramic substrate resistor 65 are mounted on one side of the intermediate portion. The first high-voltage capacitor 50 and the second high-voltage capacitor 55 are mounted on both surfaces of the intermediate portion of the component block substrate 110, and input / output terminal pins 250, 252, 253 connected to the ceramic substrate resistance and the ground side of the high-voltage capacitor, The terminal block 141, 142 of the terminal component block is arranged in the lower part.

  Furthermore, solder connection portions 121, 122, 123, 124, 125, and 126, in which hollow cylinders are partly cut out, are provided on the upper portions of both sides of the component block substrate 110 in order to perform solder connection of each electronic component. . The solder connection portion 122 and the solder connection portion 123 are connected to the lead wire of the high-voltage protection resistor 70 or the high-voltage protection resistor 75 by solder, and the solder connection portion 125 and the solder connection portion 126 are connected to the lead wire by solder. It has become a structure. The high voltage protection resistor 70 is connected to the high voltage transformer from the high voltage terminal of the coil unit 300 through the conductive rubber 230, the solder connection unit 121, the high voltage protection resistor 70, the solder connection unit 122, the solder connection unit 123, and the solder connection unit 124. 310 is connected to the output cable 260. The second ceramic substrate resistor 65 is connected to the high voltage protection resistor 75 and the output cable 260 via the solder connection portion 124.

  The high voltage capacitor 50 is connected via the solder connection part 121 and the solder connection part 126, and the high voltage capacitor 55 and the first ceramic substrate resistor 60 are connected to the conductive rubber 230, the solder connection part 121, and the solder connection from the high voltage terminal part of the coil part 300. In this structure, electrical connection can be made via the part 125 and the solder connection part 126.

  The high-voltage protection resistors 70 and 75, the first high-voltage capacitor 50, the second high-voltage capacitor 55, the first ceramic substrate resistor 60, the second ceramic substrate resistor 65, and other components ensure the insulation distance between the components. In order to fix the position of each component, a high voltage capacitor fixing engagement portion 135 and ceramic substrate fixing engagement portions 143 and 146 are provided.

  The high-voltage protection resistors 70 and 75 disposed on the upper part of the component block 100 are disposed on both surfaces of the plate-shaped component block substrate 110 as shown in FIGS. It becomes a shape and becomes a structure which is easy to accommodate in the substantially square shape exterior case top surface substantially square shape part 244 which protruded in the top surface part of the substantially square shape exterior case 240.

  According to such a configuration, the high-voltage protection resistor arranged in the upper part of the component block can be stored in the substantially rectangular shape of the substantially rectangular outer case protruding from the top of the substantially rectangular outer case, When a large current is passed through the high-voltage protection resistor in the high-voltage part, the high-voltage protection resistor generates a large amount of heat, but the high-voltage high-voltage protection resistor that generates a large amount of heat can be separated from the coil part and the diode holder. Arrangement without changing the size of the main body in the thickness direction is possible.

  FIG. 6 is a circuit diagram of the high voltage transformer according to the third embodiment of the present invention configured as described above. In FIG. 6, the components arranged inside the broken line E are the coil unit 300, the components arranged inside the broken line C are arranged inside the diode holder 45, and the broken line D constitutes the component block 100. ing.

  The inside of the coil unit 300 includes the core 10, the primary winding 20, and the secondary winding 30. A plurality of diodes 40 are mounted inside the diode holder 45, and the first high-voltage capacitor 50 is installed inside the component block 100. The second high-voltage capacitor 55, the high-voltage protection resistors 70 and 75, the first ceramic substrate resistor 60, and the second ceramic substrate resistor 65 are mounted.

  In the above description, the case where the present invention is applied to the high-voltage transformer of the present invention has been described as an example. However, the present invention can also be applied to a case where the circuit and arrangement of electrical components in the component block 100 are changed.

  The present invention relates to a high voltage transformer that uses a high voltage and supplies it to devices, devices, and the like that require a thin transformer.

Schematic diagram of high-voltage transformer in Embodiment 1 of the present invention Partial enlarged view of the high-voltage transformer in Embodiment 1 of the present invention Detailed view of diode holder mounted on coil portion of high-voltage transformer in Embodiment 1 of the present invention Detailed view of diode holder of high-voltage transformer in Embodiment 1 of the present invention Detailed view of component block of high-voltage transformer in Embodiment 1 of the present invention Circuit diagram of high-voltage transformer in Embodiment 3 of the present invention Plan view and side view of conventional high voltage transformer Circuit diagram of conventional high voltage transformer Sectional view and bottom view of conventional converter transformer

Explanation of symbols

10 core 11 core square leg 20 primary winding 25 primary coil bobbin 30 secondary winding 35 secondary coil bobbin 36 secondary coil bobbin recess 37 secondary coil bobbin engaging portion 38 secondary coil bobbin terminal block 40 diode 41 lead Wire 42 Diode holder substrate 43 Diode holder protrusion 45 Diode holder 46 Diode holder hollow hole 47 Secondary coil bobbin fixing rib 48 Diode holder engagement portion 49 Diode holder substantially square hole 50 First high voltage capacitor 52 Lead wire 55 Second wire High voltage capacitor 60 First ceramic substrate resistor 61 Ground lead wire 65 Second ceramic substrate resistor 66 Ground lead wire 70, 75 High voltage protection resistor 100 Component block 110 Component block substrate 112 Positioning rib 121, 122 , 123, 124, 125, 126 Solder connection part 131 Conductive rubber frame 132 Conductive rubber frame engagement part 135 High voltage capacitor fixing engagement part 141, 142 Board terminal block 143, 146 Ceramic board resistor fixing part Joint part 150 Substrate protrusion 151 Substrate L-shaped rib 152 L-shaped tip engagement part 180 Substrate notch part 210 Terminal pin 211 Acute-angle terminal pin 230 Conductive rubber 232 Dish-shaped concave part 240 Substantially rectangular outer case 241 Substantially rectangular Shaped exterior case side surface 242 Approximately square-shaped exterior case opening top 243 Side recess groove 244 Approximately square-shaped exterior case top surface approximately rectangular shape 245 Approximately square-shaped exterior case opening notch 250, 252, 253, 254 Input / output terminal pin 260 Output cable 300 Coil section 310 High voltage transformer

Claims (7)

A coil portion having a coil bobbin wound around a core axis, a diode holder having a plurality of diodes connected to the start and end of the winding, and a high voltage generated by the winding A component block on which a plurality of electronic components connected to the terminal end of the device are mounted,
A high-voltage transformer, wherein the coil portion, the diode holder, and the component block are housed in a substantially square-shaped outer case. 2. The high-voltage transformer according to claim 1, wherein the component block, the diode holder, and the coil portion are arranged at positions facing the leg portions of the core. The input / output terminal pins of the coil section and the input / output terminal pins of each electronic component arranged in the component block are arranged in a straight line above the substantially square-shaped outer case opening surface. High voltage transformer. 3. The high-voltage transformer according to claim 2, wherein the high-voltage protection resistor disposed on the component block is housed in a substantially square-shaped portion protruding from the top surface of the substantially square-shaped outer case. A hollow hole is formed in the vicinity of the center opposite to the surface on which the diode is mounted, the diode holder is formed with substantially square holes on both side surfaces on which the diode is mounted, and a protrusion is formed in the vicinity of the center of the side surface. And forming an L-shaped rib in the vicinity of the center of the side surface so that the protrusions are opposed to each other, and the both ends of the L-shaped rib have an engaging portion in the outward direction.
A protrusion in the vicinity of the center of the side surface of the component block is fitted into the hollow hole of the diode holder, and a substantially square hole on both side surfaces of the diode holder is connected to the tip of the L-shaped rib of the component block. The high voltage transformer according to claim 2, wherein a joint portion is mounted. The secondary coil bobbin in which the terminal pin having a structure in which the tip is cut at an acute angle is embedded in the terminal block holding base connected to the high voltage terminal, and the lead of the electronic component of the high voltage terminal are the above A component block equipped with the diode holder disposed so as to be substantially parallel to the acutely cut pin embedded in the secondary side coil bobbin and the conductive rubber to which the terminal pin connected to the terminal portion of the high voltage is connected And
The component block is united with the diode holder mounted on the secondary coil bobbin, and the terminal pin whose tip of the secondary coil bobbin is cut at an acute angle pierces the conductive rubber of the component block, enabling electrical connection 3. The high voltage transformer according to claim 2, wherein the high voltage transformer is arranged so as to be able to. The high voltage transformer according to claim 6, wherein the conductive rubber disposed in the component block has a substantially columnar shape, and a side surface has a concave dish shape.

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