JPH077111U - Inductor - Google Patents

Abstract

(57) [Summary] (Modified) [Purpose] To manufacture inductors by bending process instead of winding process. A plurality of first rectangular flat metal plates 2 arranged in a first plane in a direction perpendicular to the longitudinal direction of the rectangle, and a second plane parallel to the first plane in a direction perpendicular to the longitudinal direction of the rectangle. A plurality of second rectangular flat metal plates 3, one end of the long side portion of the first rectangular flat metal plate 2 and the corresponding one end of the long side portion of the second rectangular flat metal plate 3. A first rectangular inclined metal plate 4 to be connected and another end of the second rectangular flat metal plate 3 which is different from one end of the long side, and a corresponding one end of the long side of the first rectangular flat metal plate 2. A second rectangular inclined metal plate 5 that connects the other end different from the above is repeatedly and sequentially connected to form an inductor. A ferromagnetic core can be inserted into the space formed by this 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 21 in a spiral shape around a core having a core 22 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 in which a metal plate is three-dimensionally formed by bending, that is, "the whole is made of one rectangular metal plate, and the rectangular metal plate is formed on the first plane. A plurality of first rectangular flat metal plates arranged in a direction perpendicular to the longitudinal direction of the rectangle and a second rectangular flat metal plate arranged in a direction perpendicular to the longitudinal direction of the rectangle on a second plane parallel to the first plane. A rectangular flat metal plate, a first rectangular inclined metal plate connecting one end of a long side portion of the first rectangular flat metal plate and a corresponding one end of a long side portion of the second rectangular flat metal plate, A second end that connects the other end of the second rectangular flat metal plate that is different from one end of the long side part and the other end that is different from the corresponding one end of the long side part of the first rectangular flat metal plate The first rectangular flat metal plate and the first rectangular flat metal plate Rectangular inclined metal plate, a second rectangular flat metal plate, a second rectangular inclined swash metal plate to provide a devise to configure that the inductor "which are connected repeatedly in order.

[0006]

[Action]

 In the present invention having the above-mentioned configuration, the first rectangular flat metal plate, the first rectangular slanted metal plate, the second rectangular flat metal plate, and the second rectangular slanted metal plate which are repeatedly and sequentially connected. Has a zigzag shape as a whole, and this zigzag shape generates an inductance.

[0007]

【Example】

 An embodiment of each invention of the present application will be described with reference to the drawings. FIG. 1A is a perspective view of an air-core inductor which is an embodiment of the first invention of the present application, and FIG. 1B is a perspective view of a cored inductor which is an embodiment of the second invention of the present application using a magnetic core. . The air-core inductor 1 shown in (a) is formed entirely of one metal plate, and the first rectangular flat metal plates 2, 2, 2 ... Are arranged on the first plane and the second rectangular plane. The plane metal plates 3, 3, 3 ... Are arranged on the second plane parallel to the first plane, and the first rectangular plane metal plates 2, 2, 2 ... And the second rectangular plane are arranged. The metal plates 3, 3, 3 ... Are connected by the first rectangular inclined metal plates 4, 4, 4 ... And the second rectangular flat metal plates 3, 3, 3 ... The rectangular flat metal plates 2, 2, 2 ... Are connected by the second rectangular slanted metal plates 5, 5, 5 ..., and the first rectangular flat metal plate 2 and the first rectangular slanted metal plate are connected. 4, the second rectangular flat metal plate 5, and the second rectangular slanted metal plate 3 are repeatedly connected in this order in a zigzag shape, and a connecting portion 6 is provided at the beginning of the repetition and Connection part 7 is formed.

The cored inductor 8 shown in (b) is made up of the first rectangular flat metal plates 2, 2, 2, ..., And the second rectangular flat metal plates 3, 3, 3 ... Shown in (a). The magnetic cores 9 and 10 are inserted in the space formed by the first rectangular inclined metal plates 4, 4, 4 ... And the second rectangular inclined metal plates 3.

The operation of the air-core and cored inductors of the present invention will be described with reference to FIG. FIG. 2 is a sectional view of the air-core inductor of the present invention taken along the line AA in FIG. 1 (a). The plate 2, the first rectangular tilted metal plate 4, the second rectangular flat metal plate 3, and the second rectangular tilted metal plate 5 are arranged in this order.

In the air-core inductor 1 shown in FIG. 1, when a current flows from the connecting portions 6 to 7, in the air-core inductor shown in FIG. 2, the current flows in the first rectangular flat metal plate 2 and the first rectangular slope. Since the metal plate 4, the second rectangular flat metal plate 3 and the second rectangular slanted metal plate 5 flow in this order, the magnetic field formed by each current is as shown in the figure. As a result, a concentrated magnetic field from the front to the back of the drawing is formed in the space formed by the first rectangular flat metal plate 2, the first rectangular tilted metal plate 4 and the second rectangular tilted metal plate 5. A concentrated magnetic field from the back side of the paper to the back side of the paper is formed in the void formed by the rectangular flat metal plate 3 of 2, the first rectangular tilted metal plate 4 and the second rectangular tilted metal plate 5, and these magnetic fields concentrate. An inductor is formed.

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 a metal plate having the shape shown in FIGS. 3 (a) and 3 (b). The metal plate 11 shown in (a) has a step-like shape, and is cut along each step 12, 12, 12, ... And 13, 13, 13 ,.・ And 15, 15, 15 ... Are formed. The metal plate 11 having such a shape is press-formed by using a progressive press machine to obtain the air-core inductor having the shape shown in FIG.

Although the metal plate 11 shown in (a) has a step-like shape, the air-core inductor is also manufactured by press-forming the rectangular metal plate 14 shown in FIG. 2 (b). can do. The metal plate 16 has cuts 17, 17, 17 ... and 18, 18, 18 ... alternately formed in the width direction of the rectangle, and the metal plate 11 is cut into (a) in accordance with these cuts. Press-mold into the shape shown. In this case, the rectangular flat metal plates 4 and 6 and the rectangular inclined metal plates 5 and 7 have the same length before the press molding, but the rectangular inclined metal plates 5 and 7 have the same length after the press molding. It must be longer than the rectangular flat metal plates 4 and 6. Therefore, the rectangular inclined metal plates 5 and 7 after press forming have a smaller thickness or a smaller width.

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 such a case, the printed circuit board forming the inductor, the hybrid IC, or the monolithic IC is formed with irregularities corresponding to the bent shape of the plate material, and the irregularities are formed by printing, vapor deposition, or the like. 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 flat portion in the longitudinal direction. By disposing a metal plate on the outside so as to face the flat surface portion, a capacitor having the flat surface portion as one electrode and the 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 for manufacturing the inductor of the present invention can be applied to the inductor using the wire rod.

[0016]

[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 present invention.

FIG. 2 is an operation explanatory view of the air-core inductor of the embodiment according to the present invention.

FIG. 3 is an explanatory view of a method of manufacturing an inductor according to an embodiment of the present invention.

FIG. 4 is an explanatory diagram of a conventional inductor.

[Explanation of symbols]

 1 Air Core Inductor 2 First Rectangular Flat Metal Plate 3 Second Rectangular Flat Metal Plate 4 First Rectangular Tilt Metal Plate 5 Second Rectangular Tilt Metal Plate 6,7 Connection 8 Coreed Inductor 9,10 Magnetic Core

Claims (2)

[Scope of utility model registration request] 1. A whole rectangular metal plate, the rectangular metal plate having a plurality of first rectangular flat metal plates arranged in a first plane in a direction perpendicular to a longitudinal direction of the rectangle, and the first rectangular flat metal plate. A plurality of second rectangular flat metal plates arranged in a second plane parallel to the second plane in a direction perpendicular to the longitudinal direction of the rectangle;
The one end of the long side of the first rectangular flat metal plate and the second
A first rectangular inclined metal plate that connects corresponding one ends of the long sides of the rectangular flat metal plate, and the other end different from one end of the long sides of the second rectangular flat metal plate and the first A rectangular rectangular metal plate connecting the other end of the rectangular flat metal plate to the other end different from the corresponding one, the first rectangular flat metal plate and the first rectangular tilt. An inductor in which a metal plate, the second rectangular flat metal plate, and the second rectangular slanted metal plate are sequentially and repeatedly connected. 2. A space formed by repeatedly connecting a first rectangular flat metal plate, a first rectangular tilted metal plate, a second rectangular flat metal plate, and a second rectangular tilted metal plate. The inductor according to claim 1, wherein a core made of a ferromagnetic material is inserted.