JP2595263Y2 - Base with terminal - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a base having a terminal of a transformer / choke coil, and more particularly to a base structure of a thin-layered transformer / choke coil.

[0002]

2. Description of the Related Art FIGS. 5 and 6 show the structure of the base of such a conventional thin transformer. In FIGS. 5 and 6, a center hole 7 into which a split type magnetic core 9 and a middle leg 11 of a split type magnetic core 9 and 10 are inserted at the center of a rectangular flat base 21 made of an electrically insulating material.
And a core midfoot insulating flange 4 and a core central guide flange 5 around the outer core insulating flange 12, the coil guide flange 13, and the center hole 7 for electrical insulation from the magnetic cores 9, 10.
Further, a plurality of terminals 8 are planted on opposing sides in the longitudinal direction to form a base 21. The thin transformer has a base 21
Insulation films 15 and 16 of thin electrical insulation film
A plurality of turn coil copper plates 14 and a plurality of air core coils 17 in which fine wires are spirally wound are combined to form a middle foot 11 of the E-shaped magnetic cores 9 and 10 having a higher relative magnetic permeability characteristic in both the upper and lower directions.
Through the center hole 7 of the base 21 and abut the joining surfaces, and fix the magnetic core by bonding or metal fittings, taping, or the like, and assemble the magnetic core.
Thereafter, the terminal 8 is electrically connected to the one-turn coil copper plate 14 and the air-core coil 17 by soldering or welding to form a thin transformer.

[0003]

Conventionally, a transformer choke coil having such a thin laminated structure is formed by laminating air-core coils forming a plurality of circuits, and each terminal is directly tied to a terminal provided on a base at a terminal of a lead wire. Therefore, the ends of the lead wires are fixed with solder. At that time, the insulation distance from the solder-finished terminal portion to the tip of the coil of another circuit was small, and a withstand voltage defect occurred. Therefore, it is an object of the present invention to provide a thin transformer / choke coil terminal-equipped base capable of sufficiently securing an insulation distance, ensuring insulation, and sufficiently meeting a specified withstand voltage.

That is, in the case of a base having a conventional laminated structure, in the case of a plurality of circuits, the ends of the lead wires coming from the coils of each circuit are connected to the terminals provided on the base through the upper surface of the coil of another circuit. There is no problem with using a winding material that passes the specified withstand voltage and ensures insulation, because the lead wire passes through the top surface of the coil because it was directly peeled and soldered and fixed. Since the specified withstand voltage and insulation cannot be ensured from the soldered terminal portion to the coil that does not use the winding material, there is a problem in quality.

[0005]

According to the present invention, in order to solve the above-mentioned problems, a guide having a plurality of grooves provided on an upper portion of a base with terminals is provided on one side, and is integrally formed with a coil guide flange. Further, the insulating cover has a structure in which the guide portion provided with the groove is covered from above. Laminated assembly of air core coils of multiple circuits on the base with terminals with the base with terminals and the insulating cover, pass the lead terminal of each coil through the groove provided in the guide part of the present invention, and cover from above with the insulating cover As a result, the specified breakdown voltage and insulation can be ensured, and the problem can be solved and the quality can be improved.

That is, according to the present invention, a rectangular plate made of an electrically insulating material is provided at the center thereof with a central hole into which the split leg of the E-type magnetic core is incorporated and a flange for insulation between the magnetic core and a one-turn coil copper plate. And a spirally formed air-core coil are laminated with an insulator interposed therebetween, and a split type E-type magnetic core is built in the center hole to form a thin type transformer with terminals. A coil guide flange for guiding a coil mounted on the base with terminals, a core insulating flange for insulating the core, a core middle insulating flange for mounting and insulating the core middle foot, and guiding a side surface of the core middle foot. A cover-shaped insulating cover for mounting the E-shaped core while covering the core center guide flange, and a dam-like shape having a plurality of grooves through which coil terminals are passed from ends of two coil guide flanges of the base. Specially consist of a guide A terminal with the base of the thin transformer to.

[0007]

As shown in FIG. 1, the insulating cover has a lid-like shape and includes a core guide 26, a center hole guide groove 23, an outlet hole 20 and a cover guide 25. An E-shaped core is mounted from above and below to cover the coil guide flange 13, the core insulating flange 12, the core middle foot insulating flange 4, the core center guide flange 5, and the guide 19 having the groove 2.
In order to pass the specified withstand voltage, the insulation distance from the coil is secured. A dam-shaped guide 19 having a plurality of grooves between the coil guide flange 13 is provided for providing an insulation distance between the coil and the terminal. The groove 2 is a groove for pulling out the coil to the terminal 8, but the dam-like guide 19 is wrapped around the end while the coil is over this guide, so that the insulation distance increases and the specified withstand voltage is passed. Become like

[0008]

FIG. 1 is a perspective view showing an insulating cover and a base with terminals according to the present invention. FIG. 2 is a perspective view of the terminal-equipped base with the insulating cover according to the embodiment of the present invention. FIG. 3 is a perspective view showing a state in which an E-shaped core is set on a base with terminals to which the insulating cover of the present invention is attached. FIG. 4 is an explanatory view showing a state where the insulation distance between the coil terminals of the primary side coil and the secondary side coil of the terminal-equipped base of the present invention is ensured. FIG. 4A shows the primary and secondary sides of the present invention. FIG. 4B is an enlarged cross-sectional view of the terminal-equipped base showing a state of securing the insulation distance of the coil terminal of the secondary coil, and FIG. 4B is an enlarged explanatory view showing the insulation distance of FIG.

The terminal-equipped base of the present invention is a terminal-equipped base used for a thin transformer choke coil or the like, and is mounted so as to sandwich the terminal-equipped base with an E-shaped ferrite core of a magnetic core. As shown in FIG. 1, the base with terminals is a rectangular flat base 1 made of an electrical insulating material, and the split type magnetic cores 9 and 10 (see FIG. 3) are installed at the center of the base. In order to electrically insulate the center hole 7 from the magnetic core, core insulating flanges 12 and coil guide flanges 13 on both outer sides and a core middle foot insulating flange 4 and a core center guide flange 5 are provided around the center hole 7. . In addition, a plurality of terminals 8 are planted on opposing sides in the longitudinal direction. A dam-shaped guide 19 is provided on one end of the coil guide flange 13 on the base with terminals.

The center of the terminal-equipped base having the bank-shaped guide 19 having the plurality of grooves 2, that is, four coil guide flanges 13, two core insulating flanges 12, and a core middle foot insulating flange 4, An insulating cover 22 for covering the core center guide flange 5, the center hole 7, and the bank-shaped guide having the plurality of grooves 2 is attached to the center of the terminal-equipped base of the thin transformer / choke coil.

The insulating cover 22 covers the central portion of the base with terminals as described above, and is mounted on the base with terminals. The shape of the insulating cover 22 is a lid-like shape that covers the base with terminals. It has become. The two core guides 26 have cover guides 25 at both ends so that an E-shaped magnetic core can be mounted.
Is a lid that covers the four coil guide flanges 13, and has a lead-out hole 20 for pulling out a terminal of the coil.

FIG. 2 shows a state in which the insulating cover 22 covers the center of the base with terminals. Further, the insulating cover 22 covers the center hole of the base, forms a center hole guide groove 23 for inserting the center leg of the core, and forms a step between the core insertion groove 3 and the cover guide 25 to form an E-shaped magnetic member. A center hole guide groove 23, a cover guide, and a core guide 26 are provided so that the core can be mounted. The lead-out hole 20 is for drawing out a coil to be connected to the terminal.

[0013] As shown in FIG.
And an insulating cover 22 over the two E-shaped magnetic cores 9,
10 is a transformer choke coil with 10 mounted.

FIG. 4 shows a state in which the terminals of the primary side coil and the secondary side coil of the terminal-equipped base of the present invention are pulled out, and the coil terminals are tied to the terminals of the base. FIG. 4A shows that an insulating cover made of an electrical insulating material covers the primary coil and the secondary coil, insulates the E-shaped magnetic core,
Furthermore, it is shown that the coil ends of the primary side coil and the secondary side coil pass through the groove 2 of the guide 19, so that the distance from the terminal can be advantageously secured. That is, FIG. 4 (b) shows the insulation distance c on the inner surface of the guide 19 and the thickness d of the guide because the coil end passes through the groove 2 of the guide 19.
And a spatial distance g from the groove of the guide to the lead-out hole 20 of the insulating cover, and a distance f substantially from the guide to the terminal.
Is added to the insulation distance, and a sufficient insulation distance can be secured.

[0015]

As described above, the terminal of each coil is passed through the groove provided in the guide of the present invention through the terminal-provided base of the thin transformer / choke coil formed by laminating the air-core coils of a plurality of circuits. By covering the base with terminals with an insulating cover, the specified withstand voltage and insulation can be secured, and the quality of the thin transformer and choke coil can be improved.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an insulating cover and a base with terminals of the present invention.

FIG. 2 is a perspective view of the terminal-equipped base with the insulating cover according to the embodiment of the present invention;

FIG. 3 is a perspective view showing a state in which an E-shaped magnetic core is mounted on a base with terminals on which the insulating cover of the present invention is mounted.

FIG. 4 is an explanatory view showing a state where the insulation distance between the coil terminals of the primary side coil and the secondary side coil of the terminal-equipped base of the present invention is ensured. FIG. 4 (a) shows the primary and secondary sides of the present invention. FIG. 4B is an enlarged sectional view of the terminal-equipped base showing the state of securing the insulation distance of the coil terminal of the side coil, and FIG. 4B is an enlarged explanatory view showing the insulation distance of FIG.

FIG. 5 is a perspective view of a conventional base with terminals.

FIG. 6 is an exploded perspective view of a conventional base with terminals.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Base with terminal 2 Groove 3 Core insertion groove 4 Core midfoot insulating flange 5 Core center guide flange 6 Core guide flange 7 Center hole 8 Terminal 9 Magnetic core 10 Magnetic core 11 Midfoot 12 Core insulating flange 13 Coil guide flange 14 Coil copper plate 14a Terminal hole 15 Insulating film 16 Insulating film 17 Air-core coil 19 Guide 20 Outgoing hole 21 Base 22 Insulating cover 23 Center hole guide groove 24 Coil end 25 Cover guide 26 Core guide

Claims (1)

(57) [Scope of request for utility model registration] 1. A rectangular plate made of an electrically insulating material is provided at the center thereof with a central hole into which a split E-type magnetic core is incorporated and a flange for insulation between the magnetic core and a one-turn coil copper plate and a spiral shape. A base with a terminal of a thin transformer, wherein a base with a terminal of a thin transformer is formed by laminating an air-core coil formed in the above with an insulator interposed therebetween and incorporating a divided E-shaped magnetic core in the center hole. A coil guide flange for guiding a coil mounted on the core, a core insulating flange for insulating the core, a core middle foot insulating flange for mounting and insulating the core middle foot, and a core center guide for guiding the side surface of the core middle foot. A cover-shaped insulating cover to which an E-shaped core is attached while covering the flange, and a dam-like guide having a plurality of grooves through which coil terminals pass from ends of two coil guide flanges of the base. Characterized by becoming Base with lance terminal.