JPH0563027U - High voltage transformer - Google Patents

Abstract

(57) [Abstract] [Purpose] To reduce vibration resistance problems caused by vibration of the entire transformer, rattling of the magnetic core, cracking of the magnetic core, fixing of the magnetic core, and insufficient installation of the transformer. Its purpose is to provide a high-voltage transformer with good reliability and workability. [Structure] The magnetic core 12 is installed by inclining to the insulating case 7 having a cylindrical bottom surface, and the magnetic core 12 is mounted on two surfaces, that is, the bottom surface portion 21 of the magnetic core 12 located outside the insulating case 7 and the bottom surface portion of the insulating case. The structure that can form the surface enables extremely stable installation.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a high-voltage transformer used for a discharge lamp lamp used for electrical equipment, industrial use, and consumer use.

[0002]

[Prior Art]

 This type of conventional transformer generally has a structure as shown in FIGS. The configuration will be described below.

As shown in the figure, the primary coil 1 is configured by winding a predetermined number of conducting wires around a plurality of divided primary bobbins 2, and wiring the wiring terminals 3 by entwining a lead portion. The secondary coil 4 fitted to the primary coil 1 is wired to the winding start terminal 6a, and then a predetermined number of conductor wires are wound around the secondary bobbin 5 divided into a plurality of pieces to be distributed to the winding end terminal 6b. Is configured.

These coil parts are housed in an insulating case 7, and a high voltage lead wire 9 passing through a bushing 8 is wire-soldered to the winding end terminal 6 b of the secondary coil 4 and then the high voltage lead wire of the insulating case 7 is formed. It is drawn out from the wire drawing section 10. Further, these coil parts are filled and sealed with an insulating material 11 such as epoxy resin. As shown in FIG. 4, the magnetic core 12 and the spacer 13 are installed in the insulating case 7 in a horizontal direction, and the magnetic core 12 is fastened to the outer peripheral part thereof. It is configured by mounting the metal fitting 14 and fixing it with the adhesive 15.

Further, as shown in FIG. 5, this type of high-voltage transformer 16 is housed in a metal case 18 together with a circuit part 17 for driving the transformer, and at this time, the high-voltage transformer 16 is driven to the pin terminal side. The circuit part 17 to be mounted is mounted, and the insulating case bottom surface portion 7 a of the high-voltage transformer 16 is arranged and installed on the bottom surface of the metal case 18. Depending on the application, a part or the whole of the high-voltage transformer 16 may be cast with a flexible filler 19 such as silicon resin.

[0006]

[Problems to be solved by the device]

 In the conventional configuration as described above, the magnetic core 12 and the insulating case 7 are often fixed to each other with the adhesive 15 or the like at the magnetic core insertion port, and the metal case 18 is fixed to the insulating case 7. Since it is installed only on the bottom surface of the transformer, the vibration of the entire transformer, the rattling of the magnetic core 12, and the cracking of the magnetic core 12 are especially required when used in electrical components that require strong measures against vibration and drop impact. In addition, there is a problem that a fatal defect such as poor continuity of the pin terminal soldering portion occurs due to insufficient installation of the transformer.

The present invention solves the above problems, and an object thereof is to provide a highly reliable high-voltage transformer.

[0008]

[Means for Solving the Problems]

 In order to achieve the above object, the present invention accommodates a coil part in which a primary winding and a secondary winding are wound on a coil bobbin, and the magnetic core is inclined by an insulating case having a cylindrical bottom surface and an opening on the top surface. And a bottom surface of the insulating case and a bottom surface of a portion of the magnetic core located outside the insulation case form a mounting surface.

Further, a magnetic core cover portion covering the surface of the magnetic core exposed from the insulating case is provided integrally with the insulating case, and a bottom surface of the insulating case and a bottom surface portion of the magnetic core cover portion form a mounting surface. It is what

[0010]

[Action]

 According to the above-mentioned means for solving the problems, the present invention provides a bottom portion of a cylindrical core having an opening at the top and a bottom portion of a magnetic core that is installed at an angle to the bottom portion of the magnetic core that is installed obliquely, Alternatively, the mounting surface can be formed by the two surfaces of the bottom surface of the magnetic core cover that covers the surface of the magnetic core provided integrally with the insulating case, and extremely stable installation is possible. Vibration resistance defects such as core cracks will be eliminated.

[0011]

【Example】

 Example 1 An example of the present invention will be described below with reference to FIG. The same components as those in the conventional example are designated by the same reference numerals and the description thereof will be omitted.

FIG. 1 is an external view of a transformer according to an embodiment of the present invention. As shown in FIG. 1, reference numeral 7 denotes an insulating case having a cylindrical bottom portion 7a having an opening on the upper surface, and a magnetic core 12 It is installed in a tilted manner in the insulating case 7, and 20 is a locking wall that fixes the tilt angle, and is installed so as to sandwich the side surface of the magnetic core 12 on both sides of the insulating case 7.

By thus incliningly incorporating the magnetic core 12, the bottom surface portion 7a of the insulating case 7 and the magnetic core bottom surface portion 21 of the magnetic core 12 located outside the insulating case 7 form an attachment surface. It becomes a structure.

As described above, according to the present embodiment, the outer side of the insulating case 7 of the magnetic core 12 that is obliquely assembled with the bottom portion of the insulating case 7 having a cylindrical bottom portion and having an opening on the upper surface. Since the mounting surface can be formed by the two surfaces of the bottom surface portion 21 of the magnetic core 12 and the extremely stable installation, the vibration of the magnetic core 12 such as rattling and cracking of the magnetic core 12 can be eliminated. Will be done.

Second Embodiment Hereinafter, a second embodiment of the present invention will be described with reference to FIG. The same components as those in the conventional example and the first embodiment are designated by the same reference numerals and the description thereof will be omitted.

FIG. 2 is an external view of a high-voltage transformer according to a second embodiment of the present invention, which is different from the configuration of FIG. 1 in that the magnetic core cover portion 22 is an insulating case integrally provided with the insulating case 7. The side surface of the magnetic core 12 exposed from 7 is covered, and the magnetic core 12 has a size and structure that does not protrude from the magnetic core cover portion 22. Therefore, the bottom surface portion 7a of the insulating case 7 and the bottom surface portion 23 of the magnetic core cover portion 22 can form a mounting surface.

As described above, in the configuration of the second embodiment, since the magnetic core cover portion 22 also serves to protect the magnetic core 12, the magnetic core 12 does not come into direct contact with the outer case that houses the transformer, Vibration resistance is further improved.

[0018]

[Effect of the device]

 As is apparent from the above embodiments, according to the present invention, the bottom surface is located outside the insulation case of the magnetic core assembled obliquely with the bottom surface of the insulation case having the cylindrical shape and the opening on the top surface. The mounting surface can be formed by the bottom surface of the part or the bottom surface of the magnetic core cover that covers the surface of the magnetic core provided integrally with the insulating case, enabling extremely stable installation, and rattling of the magnetic core. Furthermore, vibration resistance defects such as cracks in the magnetic core are eliminated. In addition, it goes without saying that the circuit unit using this high-voltage transformer can effectively utilize the space occupied by the transformer in the metal case that houses the high-voltage transformer together with the circuit portion.

[Brief description of drawings]

FIG. 1 is an external perspective view of a high voltage transformer according to a first embodiment of the present invention.

FIG. 2 is an external perspective view of a high voltage transformer according to a second embodiment of the present invention.

[Fig. 3] Assembly drawing of a conventional high-voltage transformer

FIG. 4 is a side view of a conventional high voltage transformer.

FIG. 5 is an assembly diagram showing a usage example of a conventional high-voltage transformer.

FIG. 6 is a sectional view of the same.

[Explanation of symbols]

 1 Primary Coil 4 Secondary Coil 7 Insulation Case 7a Bottom Part 12 Magnetic Core 20 Locking Wall 21 Bottom Part 22 Magnetic Core Cover Part 23 Bottom Part

Claims (2)

[Scope of utility model registration request] 1. A coil portion comprising a coil bobbin around which a primary winding and a secondary winding are wound, an insulating case for accommodating the coil portion and having a cylindrical bottom portion having an opening on the upper surface, and the coil portion. With a magnetic core that is inclined and incorporated into the incorporated insulating case,
A high voltage transformer in which a mounting surface is formed by a bottom surface portion of the insulating case and a bottom surface portion of a portion of the magnetic core located outside the insulation case. 2. The mounting surface is formed by the bottom surface of the insulating case and the bottom surface of the magnetic core cover that covers the surface of the magnetic core exposed from the insulation case that is provided integrally with the insulation case. High voltage transformer.