JP2566073Y2 - Thin transformer, base for choke coil and electronic component using the same - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a thin transformer, a base for forming a choke coil, and more particularly to a thin transformer having a terminal portion replaceable, a choke coil base, and a coil using the same. It relates to electronic components such as transformers.

[0002]

2. Description of the Related Art As shown in FIG. 5, a conventional base for a thin transformer and a choke coil (hereinafter referred to as a base) 11 is shown.
Is a terminal 12 integrated with the coil terminal 12a at both ends in the longitudinal direction.
Inner peripheral collar 1 in which a plurality of
4 is provided, and is made of a flat resin electric insulating material having outer flanges 13 formed at both ends on the outer side in the width direction. Further, a coil and a transformer using the base are manufactured as follows. As shown in FIG.
A one-turn copper plate coil 16 or a spiral type air-core coil is laminated on the protruding upper surface of a, and is held between the outer flange 13 and the inner peripheral flange 14, and the terminal hole 16a of the one-turn copper plate coil 16 is closed. To the coil terminal 12a which is integral with the coil terminal 12a.
A thin choke coil and a thin transformer are manufactured by soldering the two pieces 2a and inserting the middle foot 17a of the divided E-shaped magnetic core 17 into the center hole 15.

[0003]

However, an increase in the electric capacity of the transformer and an increase in the number of one-turn copper plate coils necessitate the use of a base having a multi-terminal structure. There has been a demand for a coil base and a coil and transformer using the same.

The present invention provides an inexpensive thin multi-terminal transformer having various terminals by arbitrarily selecting a molded terminal even if the number of terminals is increased due to an increase in the number of coils and electric capacity.
An object of the present invention is to provide a base for a choke coil and an electronic component such as a coil and a transformer using the base.

[0005]

A thin transformer according to the present invention,
The base for a choke coil is provided with a terminal molded body in which various terminals are implanted, and a base molded body that is fitted and fixed to the terminal molded body in which the one-turn copper plate coil is laminated, and is separately prepared. The outer periphery and the inner periphery of the fitting portion of the base molded body are respectively circular, the fitting convex portion is formed on the terminal molded body, the fitting concave portion is formed on the base molded body, and the fitting convex portion and the fitting concave portion are formed. The center has a projection for positioning, and the terminal molded body is provided with an insertion hole for inserting the projection, the base molded body is provided with a claw portion on the joint surface, and the terminal molded body is provided with a mounting hole on the joint surface. Provided,
The combination surface of the terminal molded body and the base molded body is determined and fitted. Electronic components such as a thin choke coil and a thin transformer using the base are formed by laminating a one-turn copper plate coil or a spiral air core coil on the upper surface of the base, and forming a terminal hole of the one-turn copper plate coil or a spiral air core coil. Of the split E-shaped magnetic core is inserted into the center hole and assembled.

That is, in the present invention, a center hole into which a split E-shaped magnetic core is incorporated at the center in the center of a flat plate, an inner peripheral flange is provided around the central hole, and an outer flange is provided on the outer periphery. In the base for a thin transformer or choke coil, a terminal is implanted on one end surface, and a circular outer peripheral fitting protrusion having an insertion hole in the center and terminals having mounting holes on both sides of the fitting protrusion are provided. A molded body, a shape in which both end surfaces in the longitudinal direction are joint surfaces, and a projection portion to be inserted into the insertion hole at the center of the joint surface; And a base molded body provided with claw portions that fit into the mounting holes on both sides of the fitting concave portion, and the fitting convex portion is fitted and fixed to the fitting concave portion. Features a thin transformer, base for choke coil, and a thin transformer, base for choke coil An electronic component such as a coil or a transformer, wherein a one-turn copper plate coil and a spiral type air core coil are laminated on an upper surface with an insulating film interposed therebetween, and a split E-shaped magnetic core is incorporated from upper and lower surfaces. is there.

[0007]

[Function] The thin transformer and choke coil base of the present invention are separated into a terminal molded body and a base molded body in which terminals are implanted, and a terminal molded body suitable for the number of used terminals is selected and combined according to the number of coils. The base molded body can be shared by preparing a large number of terminal molded bodies according to the number of terminals used. Therefore, it is possible to assemble various types of thin transformers and choke coil bases only by preparing several types of terminal molded bodies, and to manufacture thin coils and transformers at low cost. The combination of the terminal molded body and the base molded body is such that, on the joint surface of the base molded body and the terminal molded body, an inner circular fitting recess in the base molded body, and an outer circular fitting projection in the terminal molded body. Because it is formed, it can be easily assembled and workability is good. In addition, even if the dimensions are slightly tight, it can be twisted while rotating.
The outer circular fitting serves to stop the vertical movement of the board mounting surface. Further, the fitting of the claw portion of the joint surface and the mounting hole facilitates matching of the joint surface between the terminal molded body and the base molded body and the joint upper surface. Furthermore, when the base is twisted and the flatness is reduced, the terminal molding can be corrected by tilting the terminal molding using the play between the mounting hole of the terminal molding and the claw portion of the base molding. .

[0008]

1 is an external perspective view illustrating a thin transformer and a base for a choke coil according to the present invention. FIG. 2 is an external perspective view showing a state where the terminal molded body is fitted to the base molded body. FIG. 3 is an external perspective view showing the terminal molded body.
FIG. 4 is an external perspective view showing a state where the base molded body and the terminal molded body are fitted. As shown in FIG. 1, the base of the present invention is composed of two parts, a base molded body 1 and a terminal molded body 2 (only one end face is shown). Each of the base molded body 1 and the terminal molded body 2 has a joint surface 10. At the center of the joint surface 10 of the base molded body 1, a fitting recess 7 having a circular outer periphery is formed. A projection 6 for fixing the terminal molded body 2 that determines the center position at the time of fitting is provided at the center of the fitting recess 7.
Is provided. In addition, the terminal molded body 2 is provided with a fitting projection 8 having a circular outer periphery that fits into the fitting recess 7 of the base molded body 1. Further, as shown in FIGS. 1 and 3, an insertion hole 9 for fixing the protrusion 6 is formed in the terminal molded body 2. The base molded body 1 is provided with claw portions 4 and 5 having tapered directions opposite to each other on both sides of the fitting concave portion 7.
Mounting holes 4a for mounting the claw portions 4 and 5 on both sides of the fitting convex portion 8,
5a is provided. As shown in FIG. 2, the terminal molded body 2 is incorporated into the base molded body 1 by fitting the recess 7 into the base molded body 1.
The fitting protrusions 8 of the terminal molded body 2 are fitted with the joint surfaces 10 inclined with each other, for example, inclined by 90 degrees, and rotated in the direction of arrow A, and the claw portions 4 and 5 and the terminal molded body are fitted. Stop at the position where the mounting hole for mounting the second claw portion is fixed. As shown in FIG.
The joining surface 10 of the base molded body and the terminal molded body is fixed using an adhesive, and the terminal molded bodies are fitted to both ends of the base molded body, respectively, and the flat thin transformer and choke coil base of the present invention are assembled. It is.

[0009] The coil and transformer of the present invention use this base, as shown in FIG.
The turn copper plate coil 16 or the spiral type air core coil is laminated, and the terminal hole 16a of the one turn copper plate coil 16 is inserted into the coil terminal 12a and connected by soldering. In the case of a spiral type air-core coil, its terminal is connected to the coil terminal 12a.
And solder it. Then split E-type magnetic core 17
The middle foot 17a is inserted into the center hole 15 to complete the assembly.

[0010]

The thin transformer and choke coil base according to the present invention have a multi-terminal structure, an improved electric capacity, and an increased number of turns by increasing the number of windings by independently forming several types of terminal moldings and base moldings. When the number increases, the terminal molded body and the base molded body can be arbitrarily selected and easily changed. In addition, since a plurality of bases are formed only by changing the terminal molded body, the management of the bases is facilitated, and the bases are inexpensive. Thin transformers, bases for choke coils, and coils and transformers using the same are used. Parts can be provided.

[Brief description of the drawings]

FIG. 1 is an external perspective view illustrating a thin transformer and a base for a choke coil according to the present invention.

FIG. 2 is an external perspective view showing the fitting of a thin molded transformer, a base molded body for a choke coil, and a terminal molded body according to the present invention.

FIG. 3 is an external perspective view showing a terminal molded body.

FIG. 4 is an external perspective view showing the fitting between the base molded body and the terminal molded body.

FIG. 5 is an external perspective view showing a conventional base.

FIG. 6 shows a conventional base having a one-turn copper plate coil and a split E.
FIG. 2 is an exploded perspective view of a thin transformer and a choke coil that incorporate and form a mold magnetic core.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Base molded object 2 Terminal molded object 3, 12 terminal 3a, 12a Coil terminal 4, 5 Claw part 4a, 5a Mounting hole 6 Projection part 7 Fitting concave part 8 Fitting convex part 9 Insertion hole 10 Joining surface 11 Base 13 Outer flange 14 Inner circumference flange 15 Center hole 16 1-turn copper plate coil 16a Terminal hole 17 Magnetic core 17a Middle foot

Claims (2)

(57) [Scope of request for utility model registration] 1. A flat plate-shaped center hole into which a split E-shaped magnetic core is inserted at the center, an inner flange and an outer flange formed around the center hole, and terminals are formed at both ends in the longitudinal direction. In a thin transformer, a base for a choke coil, a terminal is planted on one end surface, and an outer peripheral circular fitting convex portion provided with an insertion hole in the center and a terminal molded body provided with mounting holes on both sides of the fitting convex portion. A joint having two end surfaces in the longitudinal direction as joint surfaces, having a projection inserted into the insertion hole at the center of the joint surface, and fitting with the fitting convex portion so that the terminal molded body can rotate. A base molded body provided with a concave portion and claw portions to be fitted into the mounting holes on both sides of the fitting concave portion, wherein the fitting convex portion is fitted and fixed to the fitting concave portion. Base for thin transformers and choke coils. 2. The thin transformer and choke coil base according to claim 1, wherein a one-turn copper plate coil and a spiral air core coil are laminated on an upper surface with an insulating film interposed therebetween, and a divided E-shaped magnetic core is formed from upper and lower surfaces. Electronic components such as coils and transformers characterized by being incorporated.