JPH077112U - Inductor - Google Patents

Abstract

(57) [Summary] (Modified) [Purpose] To manufacture inductors by bending process instead of winding process. [Structure] A plurality of first rectangular curved metal plates 2 that are convex upward and are arranged in a direction perpendicular to the longitudinal direction of the rectangle, and a length of the first rectangular curved metal plates 2 concave upward. An inductor is formed by repeatedly connecting the plurality of second rectangular curved metal plates 3 connected to one end of the side portion and arranged in a direction perpendicular to the longitudinal direction of the rectangle by the connecting members 6 and 7. A ferromagnetic core can be inserted in the space formed by the inductor.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to the structure of an inductor.

[0002]

[Prior art]

 Conventionally, an inductor, which is a basic electric circuit component, is formed by winding a wire rod 22 in a spiral shape around a core having a core 21 made of a ferrite or the like or an air core having no core as shown in FIG. It is an essential work to wind a wire rod in the manufacturing process. In the case of a cored inductor, this winding work is performed by rotating a spool that supplies a wire around a fixed core, or by fixing the spool and rotating the core. In the case of an air core inductor, a mandrel is used instead of the core, and the mandrel is removed after the winding work is completed.

[0003]

[Problems of conventional technology]

 Since this winding work is performed for each inductor by a dedicated winding machine, the productivity is poor, and the work of removing the mandrel in an air-core inductor is particularly troublesome. Also, when inductors with different winding directions are required for reasons such as mutual interference avoidance, it was necessary to use different winding machines or different processes when using the same winding machine.

[0004]

[Problems to be solved by the device]

 The present invention has been made in response to such a situation, and can be manufactured with high productivity without using a dedicated winding machine, and the right winding or the left winding can be performed by one manufacturing process. The problem is to provide an inductor that is capable of obtaining the above inductor.

[0005]

[Means for Solving the Problems]

 In order to solve such a problem, in the present application, an inductor formed three-dimensionally by bending a metal plate, that is, “a plurality of first rectangular curved metal plates concavely formed upward and It is composed of a plurality of second rectangular curved metal plates formed in a convex shape, and the first rectangular curved metal plate is arranged in the direction perpendicular to the longitudinal direction of the rectangle and is attached to one end of the long side of the second rectangular curved metal plate. The second rectangular curved metal plate is arranged in the direction perpendicular to the longitudinal direction of the rectangle and is connected to one end of the long side of the first rectangular curved metal plate. And an inductor characterized in that the second rectangular curved metal plate is repeatedly and sequentially connected to each other.

[0006]

[Action]

 In the present invention having the above-mentioned configuration, the inductance is generated by the first rectangular curved metal plate and the second rectangular curved metal plate that are spirally formed by being repeatedly connected in sequence.

[0007]

【Example】

 An embodiment of each invention of the present application will be described with reference to the drawings. FIG. 1 is a perspective view of a left-handed air-core inductor 1 which is a first embodiment of the first invention of the present application. The left-handed air-core inductor 1 is entirely composed of a metal plate that is a conductor, and a plurality of rectangular metal plates are formed to be convex upward and are arranged in a direction perpendicular to the longitudinal direction of the rectangle. The first rectangular curved metal plate 2, 2, 2 ... and the rectangular metallic plate are formed in a concave shape upward and are connected to one end of the long side portion of the first rectangular curved metal plate. A plurality of second rectangular curved metal plates 3, 3, 3 ... Arranged in a direction orthogonal to the first rectangular curved metal plate 2 and the second rectangular curved metal plate 3 are connected to each other. The member 4 connects the second rectangular curved metal plate 3 and the first rectangular curved metal plate 2 by the connecting member 5, and these are repeatedly connected in sequence. The connecting members 6 and 7 are formed on both ends.

FIG. 1B is a perspective view of a left-handed cored inductor 2 which is a second embodiment of the first invention of the present application. This left-handed core inductor has a core 9 made of ferrite or the like in a space formed by the first rectangular curved metal plate 2 and the second rectangular curved metal plate 3 in the left-handed core inductor 1 shown in FIG. Has been inserted.

A method of manufacturing the inductor according to the present invention will be described with reference to FIG. The air-core inductor 1 and the cored inductor 8 are manufactured by press molding the metal plate 10 having the shape shown in this figure. The metal plate 10 is formed with cuts 11, 11, 11, ... And 12, 12, 12, ... Alternately in the width direction of the rectangle, and the metal plate 10 is shown in FIG. Press-mold into the shape shown in a).

The first rectangular curved metal plates 2, 2, 2 ... Of the inductor described above are formed to be convex upward, and the second rectangular curved metal plates 3, 3, 3 ... Are concave upward. And the resulting inductor is left-handed. The shapes of these rectangular curved metal plates are reversed, that is, the first rectangular curved metal plates 2, 2, 2 ... Are concave upward, and the second rectangular curved metal plates 3, 3, 3 ... A right-handed inductor can be obtained by forming it in a convex shape. The reverse inductor can be formed by moving the position of the press by the width of the rectangular curved metal plate during press forming.

In the embodiments described so far, the inductor is obtained by bending the plate material without winding. If this plate material is made of a conductive material film, the inductor can be directly formed on a printed circuit board, a hybrid IC or a monolithic IC. In that case, an unevenness corresponding to the bent shape of the plate material is formed on the printed circuit board forming the inductor, the hybrid IC, or the monolithic IC, and a predetermined pattern is formed on the unevenness by means of printing or vapor deposition. A conductive material film is formed on the pattern shape.

Since the inductor of the present invention is made of a metal plate, it has a surface. By disposing a metal plate on the outside facing this surface, a capacitor having a curved surface or a flat surface as one electrode and an external metal plate as the other electrode is formed. Therefore, the LC filter can be constructed with such a simple construction that the metal plate is arranged outside.

It goes without saying that the configuration of the inductor and the method of manufacturing the inductor according to the present invention can be applied to the inductor using the wire.

[0014]

[Effect of device]

 As is clear from the above description, the inductor of the present invention and the method of manufacturing the inductor can be manufactured with high productivity by a common press machine without using a dedicated winding machine.

[Brief description of drawings]

FIG. 1 is a perspective view of an inductor according to an embodiment of the first invention and the second invention of the present application.

FIG. 2 is an explanatory diagram of an inductor manufacturing method according to an embodiment of the present invention.

FIG. 3 is an explanatory diagram of a conventional inductor.

[Explanation of symbols]

 1 Left winding air core inductor 2 1st rectangular curved surface metal plate 3 2nd rectangular curved surface metal plate 4,5 Connecting member 6,7 Connecting member 8 Left winding cored inductor 9 Core 10 Metal plate 11,12 Break

Claims (2)

[Scope of utility model registration request] 1. A plurality of first rectangular curved metal plates formed in a concave shape upward and a plurality of second rectangular curved metal plates formed in a convex shape upward, wherein the first rectangular curved metal plate is formed. The second rectangular curved metal plate is arranged in a direction perpendicular to the longitudinal direction of the rectangle and is connected to one end of the long side portion of the second rectangular curved metal plate, and the second rectangular curved metal plate is arranged in a direction perpendicular to the longitudinal direction of the rectangle. The first rectangular curved metal plate is connected to one end of a long side portion of the first rectangular curved metal plate, and the first rectangular curved metal plate and the second rectangular curved metal plate are repeatedly and sequentially connected to each other. Inductor. 2. A core made of a ferromagnetic material is inserted in a space formed by sequentially and repeatedly connecting the first rectangular curved metal plate and the second rectangular curved metal plate. The inductor according to claim 1.