JPH0621231U - Thin transformer - Google Patents

Abstract

(57) [Abstract] [Purpose] A 1-turn coil copper plate and a spiral-shaped air-core coil are installed in the center of a rectangular flat plate made of an electrically insulating material to form a central hole into which the middle leg of an E-shaped magnetic core is incorporated. It is easy to form an air-core coil in a thin transformer in which the 1-turn coil copper plate, the air-core coil, and the magnetic core are incorporated and formed on a base provided with terminals at both ends.
A thin transformer with improved withstand voltage against the next coil. [Structure] A copper plate laminating base 1 for laminating a 1-turn coil copper plate 14 of a secondary coil and a winding collar base 2 for winding a winding 19 of a primary coil are used as a double structure base,
A one-turn coil copper plate 14 is laminated on the copper plate laminating base 1, the winding wire 19 is wound around the winding collar base and connected to the terminal 8, and the copper plate laminating base and the winding collar base are combined. After bonding, the E type magnetic cores 9 and 10 are assembled to form the thin transformer of the present invention.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a structure of a thin transformer which has a low mounting height on a substrate, is excellent in surface withstand voltage characteristics, and is easy to assemble.

[0002]

[Prior art]

 The structure of the base of a conventional thin transformer of this type is shown in FIGS. In FIG. 3 and FIG. 4, the electric power of the magnetic cores 9 and 10 with the central hole 7 in which the middle legs 11 of the split type magnetic cores 9 and 10 are installed in the center of the rectangular flat base 21 made of an electric insulating material. A core middle foot insulating collar 4 and a core center guide collar 5 are provided around the outer core insulating flanges 12, coil guide collars 13, and the center hole 7 for insulation, and multiple core insulating flanges are provided on opposite sides in the longitudinal direction. A base 21 is formed by implanting individual terminals 8. As shown in FIG. 4, the thin transformer is constructed by combining a base 21 with a single-turn coil copper plate 14 with insulating films 15 and 16 of thin electrically insulating films, and a plurality of air-core coils 17 in which thin wires are wound in a spiral shape. Insert the middle leg 11 of the E-shaped magnetic cores 9 and 10 having high relative magnetic permeability characteristics through the central hole 7 of the base 21 and butt the joint surfaces together, and fix the magnetic cores with adhesive or metal fittings, taping, etc., and then assemble. The terminal 8 and the one-turn coil copper plate 14 and the air-core coil 17 are electrically connected by soldering or welding to form a thin transformer. In the conventional thin transformer using the base 21 having the above-described structure, the thin air-core coil 17 to be laminated may have a wire diameter smaller than 0.1 mm. Therefore, even if it is lined with a film base, it is weak and handled. Was very difficult. There is also a problem that it is difficult to connect the lead wire to the terminal in a stable manner.

[0003]

[Problems to be solved by the device]

 In order to solve the above-mentioned problems, the present invention has a winding collar with a terminal for connecting a lead wire of an air-core coil attached to one end of a spiral air-core coil, and an end incorporating a one-turn coil copper plate. The two bases of the copper plate laminating base to which the terminals for locking and connecting the terminal holes of the 1-turn coil copper plate are attached are separately prepared to have a double structure, so that the winding flange base and the copper plate laminating base are provided. The purpose of the present invention is to provide a base in which respective terminals are arranged at both ends and combined and joined.

[0004]

[Means for Solving the Problems]

 The thin transformer according to the present invention has a rectangular flat plate made of an insulating material, a central hole for mounting the middle leg of the magnetic core, and a collar for insulation from the E-shaped magnetic core. A copper plate laminating base for laminating a one-turn coil copper plate having a plurality of terminals on the inner side of the core insulating flange and the coil guide flange of the copper plate laminating base, and the outer periphery of the core midsole insulating flange and the core central guide collar. It is a thin transformer that is equipped with a thin winding frame that can be mounted on the base, and a base that is assembled and joined by combining a winding collar base with multiple terminals at one end.

That is, according to the present invention, a rectangular hole made of an electrically insulating material is provided in the center with a flange for insulating the magnetic core from the central hole for incorporating the middle leg of the split E-shaped magnetic core, and a one-turn coil. A thin transformer with a terminal in which a copper plate and an air-core coil formed in a spiral shape are laminated with an insulator interposed between them and a split type E-type magnetic core is incorporated and formed in the central hole. A core foot formed around a central hole that incorporates a split E-type magnetic core insert by laminating a wire wrapping base around which a wire is wound, a winding lug base with a terminal attached to one end, and a one-turn coil copper plate. Each of the terminals has two double-structured bases consisting of an insulating flange, a central guide flange of the core, core insulating flanges provided on both sides of the 1-turn coil copper plate, and a copper plate laminating base with a terminal attached to one end. Placed on both sides and combined and joined Is a thin transformer.

[0006]

[Action]

 An air-core coil that forms a primary coil made by winding a thin copper wire in a spiral shape and a 1-turn coil copper plate that forms a secondary coil are laminated on a flat base made of an electrically insulating material with an insulating film interposed between them. Then, in a thin transformer formed by incorporating the center leg of the E-shaped magnetic core into the center hole of the base from above and below, the base part on which the one-turn coil copper plate is laminated and the thin copper wire are wound in a spiral shape. The part where the air-core coil is placed is cut laterally at the part off the center hole of the base, and the part around which the copper plate laminating base and the air-core coil are wound is the core middle foot insulation collar around the center hole of the base. And a copper plate laminating base with a core center guide collar, and a winding base with a collar for winding a thin copper wire in contact with the outer periphery of the core middle foot insulating collar and the core center guide collar, Primary coil for flanged base for winding After winding a thin wire and connecting the lead wire of the primary coil to the terminal, combine 1 turn coil copper plates and combine with the copper plate laminating base in which the terminal holes of 1 turn coil copper plate are connected to the terminals, and resin bond Then, the thin transformer of the present invention is used. Since a thin copper wire is wound around the winding collar that forms the primary coil in the same way as a normal transformer winding, it is not necessary to form a thin spiral coil and connection to the terminals is easy. In addition, the electrical withstand voltage characteristics of the primary coil and the secondary coil are significantly improved compared to the conventional thin transformer because the air coil is separated by the winding collar between the 1 turn coil copper plate and the air core coil. To do.

[0007]

【Example】

 The thin transformer of the present invention will be described with reference to the drawings. FIG. 1 is an exploded perspective view of a thin transformer according to the present invention, and FIG. 2 is a longitudinal sectional view showing a thin transformer according to the present invention before a magnetic core in which a base with a collar for winding is incorporated into a base for laminating copper plates is incorporated. is there. A rectangular flat plate made of an electrically insulating material, which is a copper plate laminating base 1, has a central hole 7 in which the E-shaped magnetic cores 9 and 10 are mounted in the center, and a core insulation for insulating the E-shaped magnetic core. A copper plate laminating base 1 having a collar 12, a coil guide collar 13, a coil middle foot insulating collar 4, a core center guide collar 5, and a terminal 8 aligned at one end, and the core middle foot insulating collar that is in contact with the inner circumference. 4. The core center guide collar 5 has a fitting hole 18 that fits inside, and the winding collar base 2 having the terminals 8 aligned at one end is combined with resin to form a thin transformer. Fig. 2 is a longitudinal sectional view of a thin transformer in which a copper plate laminating base 1 and a winding collar base 2 are assembled and joined before the E-shaped magnetic core is assembled. As shown in Fig. 2, the winding collar is attached. The base 2 is made integrally with the winding collar 2a, and the winding 19 of the primary coil may be wound by the same means as a conventional coil or the winding of a transformer. It is not necessary to form a flat coil, and the winding wire 19 and the lead wire 19a are entangled and connected to the lead wire connection terminal 8a. Therefore, the manufacture of the primary coil is greatly facilitated. FIG. 5 is a side view of a thin transformer according to the present invention.

[0008]

[Effect of device]

 As described above, the secondary-side 1-turn coil copper plate is wound in advance on the copper plate laminating base, the winding of the thin wire primary coil is wound around the winding flanged base, and the coil end is connected to the terminal in advance. Since the structure is such that two bases are combined and bonded together, it is easy to handle soft things such as thin wires such as the air core coil of the conventional primary coil. Since it can be fixed to the terminal, workability for stacking coils of the thin transformer according to the present invention is improved.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a thin transformer according to the present invention.

FIG. 2 is a vertical cross-sectional view of a base with a flange for a copper plate laminating base in a state in which a magnetic core of a thin transformer according to the present invention is not incorporated.

FIG. 3 is a perspective view showing a conventional base.

FIG. 4 is an exploded perspective view of a conventional thin transformer.

FIG. 5 is a side view of a thin transformer according to the present invention.

[Explanation of symbols]

 1 Base for Laminating Copper Plates 2 Base for Collar for Winding 2a Collar for Winding 4 Collar for Core Middle Insulation 5 Core Central Guide Collar for Core 6 Core Guide Groove 7 Center Hole 8 Terminal 8a Lead Wire Connection Terminal 9, 10 Magnetic Core 11 Middle Leg 12 core insulating collar 13 coil guide collar 14 1 turn coil copper plate 14a terminal hole 15, 16 insulating film 17 air core coil 18 fitting hole 19 winding 19a lead wire 21 base

Claims (1)

[Scope of utility model registration request] 1. A rectangular flat plate made of an electrically insulating material is provided with a central hole for incorporating a middle leg of a split type E-shaped magnetic core and a flange for insulation between the magnetic core and a one-turn coil copper plate with a spiral shape. A thin transformer with a terminal, in which the air-core coil formed in (1) and (2) are laminated by interposing an insulator, and a split type E-shaped magnetic core is incorporated and formed in the center hole, in which a thin copper wire is wound. Core for forming a wire core and base for winding with a terminal attached at one end and a copper plate for 1 turn coil. A core for forming a split type E-shaped magnetic core. Two double-structured bases consisting of a central guide collar, a core insulating collar provided on both sides of the 1-turn coil copper plate, and a copper plate laminating base with a terminal attached to one end, with each terminal placed on both sides and combined. Thin tiger characterized by being joined Sense.