JP2008004719A - High voltage transformer - Google Patents

Abstract

A conventional high voltage transformer has a problem that when mounted on a printed circuit board of a set, the height dimension from the surface of the printed circuit board to the apex of the high voltage transformer becomes large.
In a primary coil bobbin having a terminal block for holding a plurality of input / output terminal pins, an input / output terminal pin holding part for holding the input / output terminal pins in one direction from the center line of the primary coil bobbin. By arranging the input / output terminal pins inserted into the holding part perpendicular to the longitudinal direction of the primary coil bobbin, the high voltage transformer can be arranged in parallel with the printed circuit board. It becomes possible to reduce the height dimension of the vertex.
[Selection] Figure 1

Description

  The present application relates to a high voltage transformer for supplying a DC high voltage.

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

  FIG. 14 shows a front view of a primary coil bobbin of a conventional high voltage transformer. As shown in FIG. 14, the primary coil bobbin 60 includes an input / output terminal pin holding portion 61, a rod-shaped input / output terminal pin 62, a primary winding 69, an input / output terminal pin primary winding winding portion 64, an input / output terminal. A pin printed board insertion portion 65 and a primary winding terminal 67 are included.

  In the conventional high voltage transformer, the rod-shaped input / output terminal pin 62 is inserted and held in the input / output terminal pin holding portion 61, and the primary winding terminal 67 is input / output terminal at the base of the rod-shaped input / output terminal pin 62. The pin is wound around the primary winding part 64.

  FIG. 15 is a cross-sectional view showing a conventional winding terminal dipping method for a high-voltage transformer. A method of solder dipping the rod-shaped input / output terminal pin 62 and the primary winding terminal 67 inserted in the input / output terminal pin holding portion 61 of FIG. 14 will be described. In FIG. 15, a primary coil bobbin 60 includes an input / output terminal pin holding portion 61, a rod-shaped input / output terminal pin 62, a primary winding 69, primary winding terminals 67 and 64, and an input / output terminal pin printed board insertion portion. The solder dip connection is performed using the solder tank 71 and the molten solder 72 in the solder tank.

  The primary coil bobbin 60 is moved in the direction of the arrow to the molten solder 72 in the solder bath 71, and the input / output terminal pin primary winding winding portion 64 wound around the input / output terminal pin in the solder 72. A method is adopted in which the input / output terminal pin 62 and the primary winding terminal 67 are connected by solder dip soaking up to a portion.

  Another example of the conventional example (Patent Document 2) will be described with reference to the drawings.

  FIG. 16 is a front view of a primary coil bobbin of another conventional high voltage transformer. In FIG. 16, the primary coil bobbin 60 includes a primary winding 69, a substantially L-shaped input / output terminal pin 70, a primary coil bobbin input / output terminal pin holding unit 61 that holds the input / output terminal pin, and an input / output terminal pin. A primary winding winding portion 63, an input / output terminal pin printed circuit board insertion portion 73, a primary winding terminal 67, and a primary winding hooking portion 68 are included.

  In this conventional example, the substantially L-shaped input / output terminal pin 70 is inserted and held in the input / output terminal pin holding portion 61, and the primary winding terminal 67 is located at one end of the substantially L-shaped input / output terminal pin 70. The output terminal pin is wound around the primary winding winding portion 63.

  FIG. 17 is a schematic diagram showing another conventional high voltage transformer winding terminal dipping method. A method of soldering the input / output terminal pin 70 and the primary winding terminal 67 of the primary coil bobbin 60 of the high voltage transformer of FIG. 16 will be described.

  In FIG. 17, the primary coil bobbin 60 includes a substantially L-shaped input / output terminal pin 70, primary winding 69, input / output terminal pin primary winding winding portion 63, input / output terminal pin holding portion 61, input / output. A terminal pin printed circuit board insertion portion 73 and a primary winding terminal 67 are used, and solder dip connection is performed using a solder bath 71 and a molten solder 72 in the solder bath.

  The primary coil bobbin 60 is moved in the direction of the arrow to the molten solder 72 in the solder bath 71, and the input / output terminal pin primary winding winding portion wound around the input / output terminal pin 70 in the solder 72. A method is adopted in which the I / O terminal pin 70 and the primary winding terminal 67 are connected by solder dip soaking up to 63 parts.

  FIG. 18 is a schematic view of another conventional high voltage transformer winding terminal dipping method as viewed from below. That is, it is a schematic view seen from the lower surface of the primary side coil bobbin 60 of FIG.

  In FIG. 18, the primary coil bobbin 60 includes a terminal holding part 61 of the primary coil bobbin, a substantially L-shaped input / output terminal pin 70, a primary winding terminal 67, and an input / output terminal pin primary winding winding part 63. It is composed of a center 77 of the primary side coil bobbin hollow cylindrical portion, and solder dip connection is performed using a solder bath 71 and a molten solder 72 in the solder bath.

A primary winding terminal 67 wound around the primary winding winding portion 63 of the input / output terminal pin 70 by moving the primary coil bobbin 60 in the direction of arrow A to the molten solder 72 in the solder bath 71. A method of connecting the input / output terminal pin 70 and the primary winding terminal 67 by dipping in the solder 72 and soldering the input / output terminal pin 70 is used. At that time, the primary winding winding portion 63 is immersed in the molten solder 72, and the primary coil bobbin 60 is rotated in the clockwise direction indicated by the arrow B around the center 77 of the primary coil bobbin hollow cylindrical portion or counterclockwise. All the input / output terminal pin primary winding winding parts 63 around which the primary winding terminal 67 is wound are similarly connected by solder dipping by rotating in the rotating direction.
Japanese Patent Laid-Open No. Sho 62-025807 Japanese Patent Laid-Open No. 08-008132

  FIG. 19 is a front view when the conventional high voltage transformer shown in FIG. 14 or 16 is mounted on a printed circuit board. FIG. 19 shows the primary coil bobbin 60, the input / output terminal pins 62, the printed board 78, and the high voltage transformer height dimension 79 from the printed board surface to the top of the transformer.

  In the configuration of the conventional high voltage transformer of FIG. 14 or FIG. 16, the longitudinal direction of the primary coil bobbin 60 of the high voltage transformer and the printed circuit board 78 are arranged vertically, and as shown in FIG. When the primary coil bobbin 60 is attached to 78, the high voltage transformer height dimension 79 from the surface of the printed circuit board 78 to the apex of the high voltage transformer increases.

  For example, when a high voltage transformer is used for a thin television, the printed circuit board 78 of the flat television set is arranged vertically in parallel with the display device, which causes a problem that the depth dimension of the television becomes large.

  14 and 15, the primary winding terminal 67 is wound around the root 64 of the input / output terminal pin. As shown in FIG. Since the dimension of the input / output terminal pin portion immersed in the solder when the winding terminal 67 is solder-dipped becomes longer, heat from the solder dip is conducted from the rod-shaped input / output terminal pin 62 to the primary coil bobbin terminal holding portion 61. This was a factor of softening the molded plastic resin of the primary coil bobbin terminal holding portion 61. On the other hand, since the winding tension of the primary winding 69 is always applied to the rod-shaped input / output terminal pin 62 due to the conventional winding configuration, the rod-shaped input / output terminal pin 62 is rod-shaped when the molded plastic resin portion of the primary coil bobbin terminal holding portion 61 is softened. The mold input / output terminal pin 62 is greatly inclined in the direction in which the tension is applied. Due to the inclination of the rod-shaped input / output terminal pin 62, the rod-shaped input / output terminal pin 62 is inserted into the input / output terminal pin insertion hole provided on the printed circuit board 78. There is a problem that it is difficult to smoothly enter the transformer and it becomes difficult to mount the transformer on the printed circuit board 78. In order to prevent this problem at the time of mounting, it is necessary to inspect all of the inclination errors of the input / output terminal pins 62 in the process after the dipping of the high voltage transformer.

  On the other hand, the conventional example of FIGS. 16 and 17 solves the above-described problem of the inclination of the input / output terminal pin, and the input / output terminal pin adopts a substantially L-shaped input / output terminal pin 70 having a substantially L shape. Further, the winding configuration around the substantially L-shaped input / output terminal pin 70 is changed. That is, the primary winding 69 is not directly wound around the printed board 78 side of the substantially L-shaped input / output terminal pin 62 but is wound around the substantially L-shaped input / output terminal pin 70 through the primary winding hook groove 68. As a result, the tension of the primary winding 69 applied to the substantially L-shaped input / output terminal pin 70 can be reduced, and it is possible to take measures against an abnormal inclination of the input / output terminal pin. However, in this conventional example, as shown in FIG. 17, the input / output terminal pin primary winding winding portion 63 of each primary winding terminal 67 is inserted substantially radially around the center 77 of the primary coil bobbin cylindrical portion. Therefore, when the primary winding terminal 67 and the substantially L-shaped input / output terminal pin 70 are soldered, the primary coil bobbin 60 is divided into two operations of a vertical arrow A and a clockwise rotation direction B. There is a problem that it is necessary to dip the next winding terminal 67 and the number of solder dip man-hours is large. Further, since the shape of the substantially L-shaped output terminal pin 70 is complicated, it is difficult to process the substantially L-shaped input / output terminal pin 70, and at the same time, the substantially L-shaped input / output terminal to the primary coil bobbin 60 is obtained. The method of inserting the pin 70 and winding the primary winding 69 around the substantially L-shaped input / output terminal pin 70 is also complicated, and there is a problem that the member price and the man-hour increase.

  The present application solves the above-mentioned 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 shape, configuration, and man-hours. Another object of the present invention is to prevent an abnormal inclination of the input / output terminal pins at the time of dipping and to easily attach a high voltage transformer to a printed circuit board.

  In order to solve the above problems, a high voltage transformer according to a first aspect of the present invention is a primary coil bobbin provided with a terminal block for holding a plurality of input / output terminal pins, and is unidirectional with respect to the center line of the primary coil bobbin. Is provided with an input / output terminal pin holding portion for holding the input / output terminal pin, and the input / output terminal pin inserted into the holding portion is arranged perpendicular to the longitudinal direction of the primary coil bobbin.

  A high voltage transformer according to a second invention of the present application includes a first bent portion in which an input / output terminal pin winds a primary winding of a primary coil bobbin, a second bent portion to be inserted into a printed circuit board, and an input / output terminal It is a U-shape with a central part that is embedded and fixed in the pin holding part.

  The high voltage transformer of the third invention of the present application has a structure in which the length of the second bent portion of the input / output terminal pin is longer than the length of the second bent portion.

  According to a fourth aspect of the present invention, the input / output terminal pin holding portion has a rectangular cross-section groove portion whose long side is equal to or larger than the diameter size of the input / output terminal pin and whose short side is smaller than the diameter size of the input / output terminal pin. A trapezoidal cross-section groove with a lower side larger than the diameter dimension of the input / output terminal pin and an upper side smaller than the diameter dimension of the input / output terminal pin so that the long side of the square cross-section groove part and the upper side of the trapezoidal cross-section groove part are in contact with each other It is a structure having a groove having a combined cross-sectional shape.

  In the high voltage transformer of the fifth invention of the present application, the input / output terminal pin holding portion has an ellipse whose longer diameter is larger than the diameter dimension of the input / output terminal pin and whose shorter diameter is smaller than the diameter dimension of the input / output terminal pin. An elliptical cross-section groove having a notch in the circumference of the groove and a trapezoidal cross-section groove whose lower side is larger than the diameter dimension of the input / output terminal pin and whose upper side is smaller than the diameter dimension of the input / output terminal pin. And a groove having a cross-sectional shape combined so that the upper side of the trapezoidal cross-section groove portion is in contact.

  In the high voltage transformer of the sixth invention of the present application, the input / output terminal pin holding portion has a perfectly circular cross-sectional groove portion whose diameter is substantially the same as the diameter dimension of the input / output terminal pin and has a notch in a part thereof, and the lower side is the input / output A cross-sectional shape that has a trapezoidal cross-sectional groove that is larger than the diameter of the terminal pin and whose upper side is smaller than the diameter of the input / output terminal pin, and that the notch of the perfect circular cross-sectional groove is in contact with the upper side of the trapezoidal cross-sectional groove This is a structure having a groove.

  In the high voltage transformer of the seventh invention of the present application, the input / output terminal pin holding portion includes a square cross-sectional groove portion whose one side is smaller than the diameter dimension of the input / output terminal pin, and a concave cross-sectional groove portion obtained by vertically inverting the concave shape, It is a structure having a groove having a cross-sectional shape in which a square cross-sectional groove portion and a concave cross-sectional groove portion are combined.

  In the high-voltage transformer of the eighth invention of the present application, the input / output terminal pin holding portion includes a square cross-sectional groove portion whose one side is smaller than the diameter dimension of the input / output terminal pin, and a concave cross-sectional groove portion obtained by vertically inverting the concave shape, It has a cross-sectional groove that is a combination of a square cross-section groove and a concave cross-section groove, and the input / output terminal pins are fixed at three points, upper right, upper left, and lower, in the cross-sectional direction of the input / output terminal pins. It is a structure in which the holding portion for fixing the upper right and upper left in the longitudinal direction is inserted into two upper and lower portions.

  In the high-voltage transformer of the ninth invention of the present application, the input / output terminal pin holding portion has an upper holding rib and a lower holding rib for fixing the input / output terminal pin vertically in the vertical direction of the input / output terminal pin. Structure.

  In the high-voltage transformer according to the first aspect of the present invention, the printed circuit board of the input / output terminal pins is provided on one side of the transformer by fixing and arranging a part of the central portion of the input / output terminal pins on the input / output terminal pin holding portion. The insertion portion can be arranged, and at the same time, when the input / output terminal pins of the transformer are mounted on the printed board, the longitudinal direction of the primary coil bobbin portion of the high voltage transformer is arranged parallel to the printed board with respect to the printed board. As a result, the height of the top of the transformer from the printed circuit board can be greatly reduced as compared with the prior art.

  The high voltage transformer of the second invention of the present application is provided with an input / output terminal pin holding portion on one side from the center line of the core holding portion of the primary side coil bobbin 1, and the input / output terminal pin is provided on the holding portion and the coil portion length of the primary side coil bobbin. By arranging the input / output terminal pins perpendicularly to the hand direction, when the input / output terminal pins are mounted on the printed circuit board, the height dimension of the top of the transformer from the printed circuit board is greatly reduced as compared with the prior art. As a result, when a high-voltage transformer is incorporated in a display device such as a flat-screen television, the dimension in the depth direction with respect to the display device can be greatly reduced.

  The high voltage transformer according to the third aspect of the present invention is an input / output terminal pin in which a second bent portion to be inserted into a printed circuit board and a first bent portion for winding the primary winding terminal of the transformer are provided at both bent portions. Is fixed to the input terminal pin holding part, and the length of the terminal part inserted into the printed circuit board is longer than the length of the terminal part around which the primary winding terminal of the transformer is wound. By adopting a configuration in which the terminal pin is inserted and held in the input terminal pin holding portion, the length of the primary coil bobbin portion of the transformer with respect to the printed circuit board when the input / output terminal pins of the high voltage transformer are mounted on the printed circuit board. The direction can be arranged parallel to the printed circuit board, and the height of the top of the transformer from the printed circuit board is greatly reduced as compared with the prior art, and at the same time the primary winding terminal of the transformer is wound. Primary Line terminal winding unit can be accommodated in the transformer of the exterior case, it can be inserted the other second bent portion of the printed circuit board to protrude outside from the side surface of the outer case.

  The first bent portion 5 can be fixed with a cured resin by injecting an insulating material such as an epoxy resin and then thermally cured to increase the holding strength of the terminal and print the second bent portion. Pin collapse after being inserted into the substrate can be reduced, and disconnection of the primary winding can be prevented. In addition, by extending the distance from the input / output terminal pin part inserted into the printed circuit board to the input / output terminal pin part fixed with epoxy resin, etc., the vibration and the impact against dropping when the transformer is inserted into the printed circuit board are alleviated. It is also possible to prevent solder cracks and the like at the terminal insertion portion of the soldered printed circuit board.

  At the same time, the high voltage transformer of the third invention of the present application also has the following effects.

  Since the height dimension of the terminal part around which the primary winding terminal is wound can be designed to be short, when the primary winding terminal and the input / output terminal pin are soldered, the input / output terminal pin is melted compared to the conventional example. The input terminal pin holding part of the molded product that holds the input / output terminal pin, which can keep the immersion depth to the solder short, reduce the heat conduction from the molten solder to the input / output terminal pin at the time of solder dipping By reducing the heat conduction to the input terminal pin, there is an effect that it is possible to prevent an abnormal inclination of the input / output terminal pin that is caused by the softening of the resin of the input terminal pin holding portion. In contrast, the dip time can be reduced because the dip can be performed with a small heat capacity.

  The high voltage transformer according to the first, second, and third inventions of the present application is configured such that a plurality of input / output terminal pin holding portions capable of holding input / output terminal pins are simultaneously aligned and output on one side surface of the transformer, thereby providing a primary winding. The plurality of terminal portions around which the wire terminals are wound can be dipped at a time, and the number of man-hours for dipping can be reduced.

  The high voltage transformer according to the fourth aspect of the present invention is configured to hold the input / output terminal pin by holding the input / output terminal pin with a structure in which the input / output terminal pin holding portion has a combination of a square cross-sectional groove portion and a trapezoidal groove portion. It is possible to prevent the terminal pins from being easily displaced or detached.

  In the high voltage transformer of the fifth invention of the present application, the input / output terminal pin holding portion 2 has a substantially trapezoidal shape and a substantially elliptical shape whose lower side is larger than the diameter dimension of the input / output terminal pin and whose upper side is smaller than the diameter dimension of the input / output terminal pin. With a structure in which a groove combined with a shape portion is inserted and the input / output terminal pins are held at three points, the input / output terminal pins can be prevented from being easily displaced or detached.

  In the high voltage transformer of the sixth invention of the present application, the input / output terminal pin pin as shown in the structure in which the input / output terminal pin holding portion 2 is provided with a groove formed by combining a substantially circular shape portion and a trapezoidal groove section. Is held at the two points and the circumference, the input / output terminal pin is held with the thermosetting resin of the terminal portion, and the input / output terminal pin can be prevented from being easily displaced or detached.

  The high voltage transformer according to the seventh and eighth inventions of the present application has a structure in which a groove in which a substantially square shape portion and a substantially concave shape portion obtained by inverting the concave shape are inserted in the input / output terminal pin holding portion is inserted into the input / output terminal. By holding the pins at three points, it is possible to hold the input / output terminal pins with the thermosetting resin and prevent the input / output terminal pins from being easily displaced or detached.

  The high voltage transformer according to the ninth aspect of the present invention has the upper and lower rib portions on the upper and lower sides of the input / output terminal pin holding portion 2, and the terminal portions are thermally cured in the vertical direction by having the upper and lower rib portions at both ends in the longitudinal direction of the input / output terminal pins. The input / output terminal pins are held by the mold resin, and the input / output terminal pins can be prevented from being easily displaced or detached.

  As described above, the high-voltage transformer of the present invention has an input / output terminal pin arranged on one side of the transformer and can change the arrangement of the coil portion without greatly changing the conventional transformer configuration, as compared with the conventional transformer. The dimension in the height direction of the transformer can be reduced. Furthermore, I / O terminal pins can be prevented from falling due to heat conduction during solder dip, and by embedding them in resin, the holding strength can be strengthened, and the terminal can be inserted into a printed circuit board, preventing pin falling and reducing the number of inspection steps. Is.

  In addition, the high voltage transformer of the present invention has the input / output terminal pins wound with the ends of the primary winding aligned in one direction without greatly changing the conventional transformer configuration as compared with the conventional transformer. Solder dip connection is possible at the same time as the terminals, and the effect of greatly reducing the number of solder dip steps can be achieved.

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

(Embodiment 1)
A high voltage transformer structure according to Embodiment 1 of the present invention will be described with reference to the drawings.

FIG. 1 is a cross-sectional view of a high voltage transformer according to Embodiment 1 of the present invention. In FIG. 1, a high voltage transformer includes a primary coil bobbin 1, an input / output terminal pin holding portion 2, a U-shaped input / output terminal pin 3, a first bent portion 5 having a primary winding terminal winding portion, a print A second bent portion 6 having an insertion portion to the substrate;
A U-shaped input / output terminal pin central portion 17, a primary winding 4, a primary winding terminal winding line portion 5 A, a primary winding terminal 7, an outer case 8, and an insulating filler 13, Attached to the printed circuit board 9. The center of the primary coil bobbin cylindrical portion and the core holding portion is indicated by the center line 10, and the height dimension of the high voltage transformer from the printed circuit board is indicated by the high voltage transformer height dimension 16.

  FIG. 2 is a configuration diagram of the primary coil bobbin of the high voltage transformer according to Embodiment 1 of the present invention, and shows a front view and a bottom view.

  In FIG. 2, the primary coil bobbin 1 includes an input / output terminal pin holding portion 2 and a U-shaped input / output terminal pin 3. The center of the primary coil bobbin cylindrical portion and the core holding portion is indicated by a center line 10.

  As shown in FIG. 2, the primary coil bobbin 1 of the high voltage transformer has an input / output that holds a U-shaped input / output terminal pin 3 in one direction from one side of the center line 10 of the cylindrical part / core holding part of the primary coil bobbin. A terminal pin holding part 2 is provided. As shown in FIG. 1, the primary coil bobbin 1 is formed by bending a U-shaped input / output terminal pin 3 having a first bent portion 5 and a second bent portion 6 in the input / output terminal pin holding portion 2. The U-shaped input / output terminal pin central portion 17 is fixed to the primary side coil bobbin input / output terminal pin holding portion 2 so that the front end of the portion is arranged in the lateral direction of the transformer.

  The U-shaped input / output terminal pin 3 has a second bent part 6 having an insertion part to the printed circuit board 9 and a first bent part 5 having a primary winding terminal winding part arranged independently of each other. With this structure, the dimension of the primary winding terminal winding portion 5A can be set to the shortest length that the primary winding terminal 7 can wind. Therefore, when the primary winding terminal 7 is soldered, the U-shaped input / output terminal pin 3 is deeply immersed in the solder to reduce heat conduction, and the U-shaped input / output terminal pin 3 is reduced. The heat conduction to the input / output terminal pin holding portion 2 holding the pin is reduced, and an abnormal inclination of the U-shaped input / output terminal pin 3 at the time of solder dipping can be prevented. Further, the dimensions of the primary winding terminal winding portion 5A can be shortened, and the primary winding terminal 7 can be dipped with a small heat capacity, and the dip time can be reduced.

  Further, as shown in FIG. 2, the primary coil bobbin 1 has a structure in which a plurality of input / output terminal pin holding portions 2 are inserted in the direction of one side, and the U-shaped input / output terminals are connected to the input / output terminal pin holding portion 2. By taking out the second bent portion 6 having the insertion portion of the pin 3 to the printed circuit board in the direction of one side surface of the high voltage transformer, when the high voltage transformer is mounted on the printed circuit board 9 as shown in FIG. The longitudinal direction of the primary coil bobbin 1 can be arranged parallel to the printed circuit board surface.

  That is, since the height dimension 16 of the high voltage transformer from the printed circuit board 9 of the high voltage transformer of the present invention is set to the thickness in the lateral direction of the high voltage transformer, it can be greatly reduced as compared with the conventional high voltage transformer. . For example, as shown in the block diagram of a flat-screen television using the high-voltage transformer in Embodiment 1 of the present invention in FIG. 3, when the high-voltage transformer is built in a display device such as a flat-screen television, the depth direction with respect to the display device 80 The dimensions of can be greatly reduced.

  Further, the high voltage transformer of the present invention is arranged such that a plurality of input / output terminal pin holding portions capable of holding the input / output terminal pins 3 are simultaneously aligned on one side of the high voltage transformer as shown in FIG. As shown in the schematic diagram illustrating the solder dipping method for the high voltage transformer according to the first embodiment of the present invention, a plurality of terminal portions wound with the primary winding terminal 7 can be dipped at one time. Man-hours can be reduced.

(Embodiment 2)
A high voltage transformer structure according to Embodiment 2 of the present invention will be described with reference to the drawings.

  FIG. 5 is a perspective view of an input / output terminal pin holding portion into which a U-shaped input / output terminal pin is inserted in Embodiment 2 of the present invention. FIG. 6 is a front view of the input / output terminal pin holding portion in the second embodiment. FIG. 7 is a YY cross-sectional view of the input / output terminal pin holding portion into which the U-shaped input / output terminal pin is inserted in the second embodiment. 8 is an XX cross-sectional view of the input / output terminal pin holding portion into which the U-shaped input / output terminal pin is inserted in the second embodiment, and FIG. 8 (a) is a state before the insertion of the U-shaped input / output terminal pin. FIG. 8B is a diagram showing the state after the insertion of the U-shaped input / output terminal pin.

  5 shows an input / output terminal pin holding portion 2, a U-shaped input / output terminal pin 3, a first bent portion 5 having a winding portion of a primary winding terminal, and a second bent having a printed circuit board insertion portion. Section 6, U-shaped input / output terminal pin central portion 17 and square input / output terminal pin holding section 2 in the cross section of U-shaped input / output terminal pin 3 is inserted into a square cross-section groove 43, U-shaped The edge part 44 which fixes the output terminal pin 3 is shown. FIG. 8 showing the cross section of FIG. 5 shows the square cross section groove 43, the trapezoidal cross section grooves 42, the edge portion 44 of the molded product formed at the junction of 42 and 43, and the input / output terminal pin cross section 45. ing.

  As shown in FIG. 5, the U-shaped input / output terminal pin 3 is fixed between the upper rib portion 46U and the lower rib portion 46D of the input / output terminal pin holding portion 2, and the length of the second bent portion 6 is increased. The first bent portion 5 is longer than the first bent portion 5. With this configuration, the second bent portion 6 of the U-shaped input / output terminal pin 3 can protrude without being obstructed by the first bent portion 5 on one side of the high voltage transformer as shown in FIG. As shown in FIG. 1, when the high voltage transformer is attached to the printed board 9, the second bent portion 6 can be smoothly inserted into the insertion hole of the printed board 9.

  Further, as shown in FIG. 1, the primary winding terminal winding portion 5A for winding the primary winding terminal 7 of the high voltage transformer is housed in the outer case 8 of the high voltage transformer, and the tip of the second bent portion 6 is placed. It can protrude from the side surface of the outer case 8 and can be inserted into the printed circuit board 9. The primary winding terminal winding portion 5A is fixed with an insulating filler 13 such as a cured epoxy resin, and the input / output terminal pin holding strength is increased, and the U-shaped input / output terminals of the high voltage transformer and the high voltage transformer are externally provided. The vibration and force applied to the pin 3 can be reduced, and disconnection of the primary winding 4 can be prevented. At the same time, when the high voltage transformer is mounted on the printed circuit board 9, the longitudinal direction of the primary side coil bobbin 1 of the high voltage transformer can be arranged parallel to the surface of the printed circuit board 9, and the height dimension of the high voltage transformer from the printed circuit board 9 can be set. Can be greatly reduced.

  The high voltage transformer of the present invention has a diameter equal to or larger than the diameter of the U-shaped input / output terminal pin 3 as shown in FIG. A substantially square rectangular cross-section groove 43 smaller than the dimension, and a trapezoid trapezoid whose lower side is larger than the diameter dimension of the U-shaped input / output terminal pin 3 and whose upper side is smaller than the diameter dimension of the U-shaped input / output terminal pin 3. A groove having a cross-sectional shape in which the cross-sectional groove portion 42 is combined so that one side having a length equal to or greater than the diameter of the U-shaped input / output terminal pin 3 of the square cross-sectional groove portion 43 is in contact with the upper side of the trapezoidal groove portion. It has an inserted structure. With this configuration, when the U-shaped input / output terminal pin 3 is inserted into the primary side coil bobbin input / output terminal pin holding part 2, as shown in FIG. 5 and FIG. The two U-shaped input / output terminal pins 3 are held at the two edge portions 44, and the U-shaped input / output terminal pins 3 can be prevented from being easily displaced or detached.

  As described above, the input / output terminal pin holding portion 2 of the present invention stably holds the U-shaped input / output terminal pin 3, and is effective in reducing inclination abnormality and misalignment. The insertion property when the voltage transformer is attached can be improved.

(Embodiment 3)
A high voltage transformer structure according to Embodiment 3 of the present invention will be described with reference to the drawings.

  9 is an XX cross-sectional view showing the groove shape and holding structure of the input / output terminal pin holding portion according to Embodiment 3 of the present invention, and FIG. 9 (a) is a state before insertion of the U-shaped input / output terminal pin. FIG. 9B is a view showing the state after the insertion of the U-shaped input / output terminal pins.

  As shown in FIG. 9, the input / output terminal pin holding portion 2 includes a trapezoidal cross-sectional groove portion 42 having a trapezoidal cross section, an elliptical cross-sectional groove portion 47 having an elliptical cross section, an edge portion 44R, and an edge portion 44L. In FIG. 9B, the U-shaped input / output terminal pin 3 is inserted into the input / output terminal pin holding portion 2.

  The elliptical cross-section groove 47 having an elliptical cross section is formed so that the U-shaped input / output terminal pin 3 is fixed to the input / output terminal pin holding section 2 so that the longer diameter in the horizontal direction is the U-shaped input / output terminal pin 3. The diameter shorter than the diameter of the U-shaped input / output terminal pin is smaller than the diameter of the U-shaped input / output terminal pin, and has a notch in the upper part of the circumference of the ellipse. Furthermore, the elliptical cross-section groove portion 47 is a groove having a cross-sectional shape that is combined so that the oval cutout portion and the lower side of the trapezoidal cross-section groove portion 42 having a trapezoidal cross section are in contact with each other, and according to the second embodiment of the present invention. As in the high voltage transformer, as shown in FIG. 9B, the terminal pin holding portion 44E, which is a part of an elliptical ellipse, and two edge portions 44L, 44R are used to connect the U-shaped input / output terminal pins 3 to each other. By holding the points, it is possible to prevent the U-shaped input / output terminal pins 3 from being easily displaced or detached.

  As described above, the input / output terminal pin holding portion 2 of the present invention stably holds the U-shaped input / output terminal pin 3, and is effective in reducing inclination abnormality and misalignment. Insertability when a high voltage transformer is mounted can be improved.

(Embodiment 4)
A high voltage transformer structure according to Embodiment 4 of the present invention will be described with reference to the drawings.

  FIG. 10 is an XX sectional view showing the groove shape and holding structure of the input / output terminal pin holding portion according to Embodiment 4 of the present invention. FIG. 10 (a) shows the state before insertion of the U-shaped input / output terminal pin. FIG. 10B is a view showing the state after the insertion of the U-shaped input / output terminal pin.

  As shown in FIG. 10, the input / output terminal pin holding portion 2 includes a trapezoidal cross section groove portion 42 having a trapezoidal cross section, a perfect circular cross section groove portion 48, an edge portion 44 </ b> R, and an edge portion 44 </ b> L. In FIG. 10B, the U-shaped input / output terminal pin 3 is inserted into the input / output terminal pin holding portion 2.

  The round cross-section groove portion 48 having a perfect cross section has a diameter substantially equal to the diameter dimension of the input / output terminal pin 3 in order to fix the U-shaped input / output terminal pin 3 to the input / output terminal pin holding portion 2. Has a notch. The perfect circular cross-sectional groove 48 is a cross-sectional groove that is combined so that the circular notch and the lower side of the trapezoidal cross-sectional groove 42 are in contact with each other, and is similar to the high-voltage transformer according to the second embodiment of the present invention. As shown in FIG. 10 (b), the U-shaped input / output terminal pin 3 is held by the substantially circular inner periphery 44F, which is the lower part of the circular shape of the perfect circular cross section groove portion 48, and the two edge portions 44L, 44R. Thus, it is possible to prevent the U-shaped input / output terminal pins from being easily displaced or detached.

  As described above, the input / output terminal pin holding portion 2 of the present invention stably holds the U-shaped input / output terminal pin 3, and is effective in reducing inclination abnormality and misalignment. Insertability when a high voltage transformer is mounted can be improved.

(Embodiment 5)
A high voltage transformer structure according to Embodiment 5 of the present invention will be described with reference to FIG.

  FIG. 11 is a schematic diagram showing the groove shape and holding structure of the input / output terminal pin holding portion according to Embodiment 5 of the present invention. FIG. 11 (a) is a front view of the input / output terminal pin holding portion, and FIG. 11 is a U-U cross-sectional view, FIG. 11C is a U-U cross-sectional view in which a U-shaped input / output terminal pin 3 is inserted, and FIG. 11D is a V-V cross-sectional view.

  As shown in FIG. 11, the input / output terminal pin holding portion 2 has input / output terminal pin holding portions 2L and 2R, edge portions 44L and 44R, a square cross-sectional groove portion 43, a square cross-sectional groove portion 45, and a cross section obtained by vertically inverting the concave shape. An input / output terminal pin holding portion 44G on one side of the concave groove and a concave cross-sectional groove portion 50 in which the concave shape is turned upside down are configured. In FIG. 11C, a U-shaped input / output terminal pin 3 is inserted into the input / output terminal pin holding portion 2.

  The square groove portion 45 whose one side is smaller than the diameter of the U-shaped input / output terminal pin 3 and the square groove portion 43 whose one side is larger than the diameter of the U-shaped input / output terminal pin 3 are short of the square groove portion 45. Notches of a groove portion having a concave cross section obtained by inverting the concave shape upside down of a cross-sectional groove portion having a notch in the side and a part of a long side of the square groove portion 43 and a concave concave groove portion 50 having a concave shape. The portion is a groove having a composite cross-sectional shape in which the side larger than the diameter of the U-shaped input / output terminal pin 3 of the joint shape portion and the concave shape portion 50 are in contact with each other. As shown in FIG. 11 (c), two edge portions 44L and 44R and a terminal pin holding portion 44G, which is one point of a groove portion having a concave cross section, are input and output as shown in FIG. By holding the terminal pin 3 at three points, the U-shaped input / output terminal pin 3 can be accommodated. Or misaligned in, but which can prevent the dislodged.

  As described above, the input / output terminal pin holding portion 2 of the present invention stably holds the U-shaped input / output terminal pin 3, and is effective in reducing inclination abnormality and misalignment. The insertion property when the voltage transformer is attached can be improved.

(Embodiment 6)
A high voltage transformer according to Embodiment 6 of the present invention will be described with reference to FIG.

  FIG. 12 is a schematic diagram showing the groove shape and holding structure of the input / output terminal pin holding portion according to Embodiment 6 of the present invention. FIG. 12 (a) is a front view of the input / output terminal pin holding portion, and FIG. Is XX ″ -Y ″ -Y sectional view, FIG. 12 (c) is YY ′ sectional view, FIG. 12 (d) is XX ′ sectional view, and FIG. 12 (e) is U-shaped. XX "-Y" -Y 'sectional drawing which inserted the output terminal pin 3 is shown.

  As shown in FIG. 12, the input / output terminal pin holding portion 2 has the input / output terminal pin holding portions 2L and 2R, the edge portions 44L and 44R, the square cross-sectional groove portion 43, the square cross-sectional groove portion 45, and 44H for holding the input / output terminal pins. , 44J, and a groove portion 50 obtained by vertically inverting the concave shape. 12 (c), (d), and (e), a U-shaped input / output terminal pin 3 is inserted into the input / output terminal pin holding portion 2.

  The input / output terminal pin holding portion 2 of the sixth embodiment is created by dividing it into a plurality of locations in the longitudinal direction of the U-shaped input / output terminal pin 3, as shown in FIG. As shown in FIG. 12 (d), the U-shaped input / output terminal pin 3 is formed by the edge portion 44L of the left molding rib 2L and the terminal pin holding portion 44J, and the lower holding portion is shown in FIG. As shown in (c), the U-shaped input / output terminal pin 3 is held by the right molding rib 2R 44R and the terminal pin holding portion 44H.

  The input / output terminal pin holding part 2 is in a state in which the left molding rib 2L and the right molding rib 2R are quasi-laterally arranged in the direction in which the input / output terminal pin section 49 is a circle, that is, as shown in FIG. As shown in the XX ″ -Y ″ -Y cross-sectional view, as in the fifth embodiment of the present invention, a square cross-section groove 45 having a side smaller than the diameter of the U-shaped input / output terminal pin 3 and a side A rectangular groove 43 larger than the diameter of the U-shaped input / output pin 3, and a groove formed by connecting a short side of the rectangular groove 45 and a part of a long side of the rectangular groove 43 with a notch; The cross-sectional groove portion 50 is combined with the concave cross-section groove portion 50 so that one side larger than the input / output terminal pin diameter dimension of the square cross-section groove portion 43 is in contact with the concave cross-section groove portion 50.

  With the above configuration, the upper left portion in the cross-sectional direction of the input / output terminal pin section 49 is formed by the edge portion 44L created in the left molding rib 2L in the XX ′ section in FIG. 12D, and the concave terminal pin holding portion 44J. The lower part of the U-shaped input / output terminal pin 3 is respectively held, and in the Y′-Y cross section of FIG. 12C, the input / output terminal pin cross-section 49 is formed by the edge portion 44 </ b> R formed on the right molding rib 2 </ b> R. The upper right in the cross-sectional direction is respectively held below the U-shaped input / output terminal pin 3 by the concave terminal pin holding portion 44H, and the terminal pin holding portion 2 as a whole is on the concave plane as shown in FIG. At the points 44J and 44H, the lower side in the cross-sectional direction of the input / output terminal pin section 49 is held, and the U-shaped input / output terminal pins 3 are held at three points including the ribs 44L and 44R. Yes.

  By holding the U-shaped input / output terminal pin 3 in the above-mentioned structure made of thermosetting resin, it is possible to prevent the U-shaped input / output terminal pin 3 from being easily displaced or detached, The insertion property of the U-shaped input / output terminal pin 3 can also be improved.

  Further, the high voltage transformer according to the sixth embodiment of the present invention has a larger groove shape than the groove shapes according to the second to fifth embodiments of the present invention, so that the strength of the molded product mold in the groove portion is high. It also has features that prevent damage and wear of the mold and extend the life of the mold.

(Embodiment 7)
A high voltage transformer structure according to a seventh embodiment of the present invention will be described with reference to FIG.

  FIG. 13 is a schematic diagram showing the groove shape and holding structure of the input / output terminal pin holding portion according to Embodiment 7 of the present invention. FIG. 13 (a) is a front view of the input / output terminal pin holding portion, and FIG. 13 (b). Shows a ZZ cross-sectional view.

  As shown in FIG. 13, the input / output terminal pin holding portion 2 includes a U-shaped input / output terminal pin 3, an upper rib portion 46 </ b> U arranged at the upper portion in the longitudinal direction of the U-shaped input / output terminal pin, and a U-shaped input. It is composed of a lower rib portion 46D disposed at the lower portion of the output terminal pin 3 in the longitudinal direction.

  The high-voltage transformer according to the seventh embodiment of the present invention is an upper part having an inclination above and below the groove of the input / output terminal pin holding part 2 into which the U-shaped input / output terminal pin 3 is inserted as shown in FIG. It has an input / output terminal pin holding portion 2 having a structure having a rib 46U, a lower rib, and 46D.

  In the high voltage transformers according to the second to sixth embodiments of the present invention, as shown in FIG. 7, the U-shaped input / output terminal pin 3 is effective in reducing the vertical inclination failure and misalignment failure. By using together with the high voltage transformer configuration of Embodiments 2 to 6 of the present invention, the terminal insertion property of the high voltage transformer to the printed circuit board is further improved, and the insertion property when the high voltage transformer is mounted on the printed circuit board is improved. It can be made.

  The high voltage transformer according to the present invention can be smoothly inserted into the printed circuit board at a low cost, and at the same time, the height dimension of the high voltage transformer from the printed circuit board can be greatly reduced as compared with the prior art, thereby reducing the depth of the apparatus. It becomes possible to make it thin, and it is useful for further thinning of a thin television or the like.

Sectional drawing of the high voltage transformer in Embodiment 1 of this invention Configuration diagram of primary side coil bobbin in Embodiment 1 of the present invention Configuration diagram of flat-screen television using high-voltage transformer in Embodiment 1 of the present invention Schematic showing the solder dipping method of the high voltage transformer in Embodiment 1 of the present invention The perspective view of the input / output terminal pin holding | maintenance part in Embodiment 2 of this invention Front view of input / output terminal pin holding part in embodiment 2 of the present invention YY sectional view of the input / output terminal pin holding part in Embodiment 2 of the present invention XX sectional drawing of the input / output terminal pin holding | maintenance part in Embodiment 2 of this invention XX sectional drawing of the input / output terminal pin holding | maintenance part in Embodiment 3 of this invention XX sectional drawing of the input-output terminal pin holding | maintenance part in Embodiment 4 of this invention Schematic diagram of input / output terminal pin holding part in Embodiment 5 of the present invention Schematic diagram of input / output terminal pin holding part in Embodiment 6 of the present invention Schematic diagram of input / output terminal pin holding part in Embodiment 7 of the present invention Front view of primary coil bobbin in conventional high voltage transformer Sectional view showing a conventional high-voltage transformer winding terminal dipping method Front view of the primary coil bobbin of another conventional high voltage transformer Schematic showing another conventional high voltage transformer solder dipping method Schematic view of another conventional high voltage transformer winding terminal dipping method as seen from below Front view when a conventional high voltage transformer is mounted on a printed circuit board

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Primary side coil bobbin 2 Input / output terminal pin holding | maintenance part 2L Left side shaping | molding rib 2R Right side shaping | molding rib 3 U-shaped input / output terminal pin 4 Primary winding 5 1st bending part 5A Primary winding terminal winding Part 6 Second bent part 7 Primary winding terminal 8 Exterior case 9 Printed circuit board 10 Center line 11 Solder dip tank 12 Dip solder 13 Insulating filler 15 Display device for flat panel television 16 High voltage transformer height dimension 17 U-shape Shape I / O terminal pin central part 42 Trapezoidal cross section groove part 43 Square cross section groove part 44 Edge part 44D Terminal pin holding part 44E Terminal pin holding part 44F Terminal pin holding part 44G Terminal pin holding part 44H Terminal pin holding part 44J Terminal pin holding part 44L Edge section 44R Edge section 45 Square section groove section 46U Upper rib section 46D Lower rib section 47 Elliptical section groove section 48 Round section Part 49 output terminal pin cross section 50 concave section groove

Claims (9)

In the primary side coil bobbin having a terminal block for holding a plurality of input / output terminal pins, an input / output terminal pin holding part for holding the input / output terminal pins is provided on one side of the center line of the primary side coil bobbin. The high-voltage transformer is characterized in that the input / output terminal pins inserted into the holding part are arranged perpendicular to the longitudinal direction of the primary coil bobbin. The input / output terminal pins are embedded and fixed in a first bent portion for winding the primary winding of the primary coil bobbin, a second bent portion to be inserted into a printed circuit board, and the input / output terminal pin holding portion. The high voltage transformer according to claim 1, wherein the high voltage transformer has a U-shape having a central portion. The high voltage transformer according to claim 2, wherein a length of the second bent portion is longer than a length of the second bent portion. The input / output terminal pin holding portion has a square cross-sectional groove portion whose long side is equal to or larger than the diameter size of the input / output terminal pin and whose short side is smaller than the diameter size of the input / output terminal pin, and whose lower side is the input / output terminal pin A trapezoidal cross-sectional groove that is larger than the diameter dimension of the input / output terminal pin and whose upper side is smaller than the diameter dimension of the input / output terminal pin, and is combined so that the long side of the square cross-sectional groove part and the upper side of the trapezoidal cross-sectional groove part are in contact with each other 4. The high-voltage transformer according to claim 1, wherein the high-voltage transformer has at least one groove. The input / output terminal pin holding portion has a longer diameter that is larger than the diameter dimension of the input / output terminal pin and a shorter diameter that is smaller than the diameter dimension of the input / output terminal pin. An elliptical cross-section groove portion, and a trapezoidal cross-section groove portion whose lower side is larger than the diameter size of the input / output terminal pin and whose upper side is smaller than the diameter size of the input / output terminal pin, 4. The high-voltage transformer according to claim 1, further comprising a groove having a cross-sectional shape combined so that an upper side of the cross-sectional groove portion is in contact with the high-voltage transformer. The input / output terminal pin holding portion has a perfect circular cross-sectional groove portion having a diameter substantially equal to the diameter size of the input / output terminal pin and a notch in a part thereof, and a lower side larger than the diameter size of the input / output terminal pin. Having a trapezoidal cross-sectional groove smaller than the diameter dimension of the input / output terminal pin, and having a groove having a cross-sectional shape in which the notch of the perfect circular cross-sectional groove and the upper side of the trapezoidal cross-sectional groove are in contact with each other The high voltage transformer according to any one of claims 1 to 3, wherein The input / output terminal pin holding portion includes a square cross-sectional groove portion whose one side is smaller than the diameter of the input / output terminal pin, and a concave cross-sectional groove portion obtained by inverting a concave shape up and down, and the square cross-sectional groove portion and the concave cross-section portion. 4. The high-voltage transformer according to claim 1, further comprising a groove having a cross-sectional shape combined with the groove portion. The input / output terminal pin holding portion includes a square cross-sectional groove portion whose one side is smaller than the diameter of the input / output terminal pin, and a concave cross-sectional groove portion obtained by inverting a concave shape up and down, and the square cross-sectional groove portion and the concave cross-section portion. A groove having a cross-sectional shape combined with a groove, and fixing the input / output terminal pin at three points, upper right, upper left and lower, in the cross-sectional direction of the input / output terminal pin, and further in the longitudinal direction of the input / output terminal pin The high-voltage transformer according to any one of claims 1 to 3, wherein a holding portion for fixing the upper right and upper left is inserted into two upper and lower portions. 3. The input / output terminal pin holding portion has an upper holding rib and a lower holding rib for fixing the input / output terminal pin in the vertical direction above and below in the longitudinal direction of the input / output terminal pin. The high voltage transformer according to any one of 1 to 8.

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