JP2538211Y2 - Surface mount coil components - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a surface mount component such as a chip type common mode choke coil.

[0002]

2. Description of the Related Art Conventionally, as a surface mount coil component, a coil is mounted on a substrate on which external connection terminals are implanted, terminals of windings of the coil are connected to the external connection terminals, and a cap is put on the coil to cover the substrate. And the external connection terminal is projected from the side surface of the substrate to form a terminal portion. As shown in FIG. 5, the terminal of the coil winding is tied to the external connection terminal a and soldered. There is known one in which a terminal binding portion of a connection terminal is molded with resin b.

[0003]

In the former and latter of the conventional coil components, the terminal portions of the external connection terminals protrude from the side surface of the substrate and are provided along one main surface of the coil component. As the mounting area of the coil component increases, for example, when mounting on a wiring board with an electronic component automatic mounting machine, it is necessary to determine the front and back of the coil component and align them in one direction, which poses a problem that the mounting operation becomes complicated. However, since the coil component is hardened and shrunk by the molding resin, the magnetic material of the coil undergoes stress to cause distortion and change in magnetic characteristics. Therefore, a coil having predetermined characteristics cannot be obtained. There is a problem that the position of the coil is shifted and the coil is partially exposed from the resin molded body, which is not preferable in terms of appearance and insulation.

The purpose of the present invention is to solve such a conventional problem.

[0005]

According to the present invention, a coil mounted on one main surface of a panel body to achieve the above object,
A surface covering coil component comprising a cover for covering the coil and connecting a terminal of a winding of the coil to an external connection terminal provided on the panel body, wherein the external connection terminal includes the one main surface of the panel body and Protruding from the other main surface opposite to the main body, the lid has a through-hole through which one end of an external connection terminal is inserted, the lid is placed on a board, and one end of the external connection terminal is inserted through the through-hole. After that, the terminal portion is bent along the lid surface to form a terminal portion, and the other end of the external connection terminal is bent along the other main surface of the panel body to form a terminal portion.

[0006]

The external connection terminals are disposed on the board body so as to protrude from one main surface of the board body on which the coil is mounted and the other opposing main surface.
One end of the external connection terminal protruding from one main surface of the panel is inserted into the through hole of the lid, and then bent along the lid surface to become a terminal portion, and the external connection terminal protrudes from the other main surface of the panel. The other end of the coil is bent along the other main surface of the board body to form a terminal part, and the terminal part of the external connection terminal is formed on each of both opposing surfaces of the coil part. It is not necessary to determine the side of the external connection terminal where the terminal portion is located when mounting on a device, and the mounting operation is simplified. Further, since the terminal portion of the external connection terminal is bent along the lid surface and the main surface of the panel body and is on the lid surface and the main surface, the mounting area of the coil component is reduced.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings.

FIGS. 1 and 2 show an embodiment of the present invention.

In FIG. 1, reference numeral 1 denotes a rectangular parallelepiped resin-made disc body, and a recess 3 is formed on one main surface 2 of the board.
Accommodates the coil 4. The coil 4 is formed by winding a winding 6 around an annular ferrite core 5, and a terminal 7 of the winding 6 is wrapped around a narrow portion 9 of a plate-shaped external connection terminal 8 implanted in the board 1. Soldered. External connection terminal 8
Are planted so as to protrude from the one main surface 2 of the panel body 1 and the other main surface opposite thereto. Reference numeral 10 denotes a plate-like lid having the same size as the board 1, and through holes 1 for inserting external connection terminals at positions corresponding to the external connection terminals 8 provided at four corners of the board 1.
1 is provided. The lid 10 is placed on the board 1 by inserting one end of the external connection terminal 8 into the through-hole 11 and then bending the one end outward along the lid surface to form the terminal portion 12. The other end of the external connection terminal 8 is also bent outward along the other main surface of the board 1 to form a terminal portion 12.

FIGS. 3 and 4 show another embodiment of the present invention.

This embodiment is different from the above embodiment in that
External connection terminal 8. The external connection terminal 8 is formed of a columnar wire, and one end of the cover 10 that is inserted into the through hole 11 is bent outward along the surface of the rear cover 10 crushed and flattened by a jig. The other end is bent and folded along the surface of the rear body 1 crushed and flattened to form the terminal portion 12.

[0012]

[Effect of the Invention] Since the present invention is configured as described above, the mounting area is small and the mounting work on the wiring board does not require discrimination between the front and back of the coil component, so that it is easy and efficient. Also, there is an effect that the characteristics of the coil do not fluctuate during the manufacturing process of the coil.

[Brief description of the drawings]

FIG. 1 is a perspective view of an embodiment of the present invention.

FIG. 2 is an exploded perspective view of the embodiment.

FIG. 3 is a perspective view of another embodiment of the present invention.

FIG. 4 is an exploded perspective view of the embodiment of FIG. 3;

FIG. 5 is a front view of a conventional coil component.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Board 2 One main surface 4 Coil 7 Terminal 8 External connection terminal 10 Lid 11 Through hole 12 Terminal part

Claims (1)

(57) [Scope of request for utility model registration] 1. A coil mounted on one main surface of a board,
A surface covering coil component comprising a cover for covering the coil and connecting a terminal of a winding of the coil to an external connection terminal provided on the panel body, wherein the external connection terminal includes the one main surface of the panel body and Protruding from the other main surface opposite to the main body, the lid has a through-hole through which one end of an external connection terminal is inserted, the lid is placed on a board, and one end of the external connection terminal is inserted through the through-hole. A surface mounting coil component, wherein the terminal portion is formed by folding along the rear lid surface to form a terminal portion, and the other end of the external connection terminal is bent along the other main surface of the panel body to form a terminal portion. .