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Coil terminal structure

A coil and structure technology, applied in the direction of transformer/inductor coil/winding/connection, transformer/inductor parts, electrical components, etc., can solve problems such as difficult and time-consuming aluminum bonding

Inactive Publication Date: 2012-11-14
KOBE STEEL LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, joining aluminum is very difficult and requires special equipment
[0013] In addition, in the joining method of applying heat, in order to ensure the reliability of the joint, it is necessary to control the temperature and heating time, so corresponding equipment and equipment are required, and it takes time.

Method used

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Examples

Experimental program
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Effect test

no. 1 Embodiment approach

[0055] The coil terminal structure 1 of the first embodiment is used for components including coils such as choke coils and transformers. The coil terminals are constructed as 1 Figure 1 ~ Figure 3 As shown, it includes: a coil portion 10 formed by winding a thin metal plate; and a terminal portion 20 drawn out in the axial direction (Z direction) of the coil portion 10 by bending the end portion of the coil portion 10 .

[0056] In order to allow current to flow through the coil unit 10 , a terminal unit 20 for connecting to another external circuit is required. Therefore, by bending the inner peripheral end portion and the outer peripheral end portion of the coil portion 10, the inner terminal portion 21 and the outer terminal portion 22 pulled out in the axial direction (Z direction) of the coil portion 10 serve as terminal portions. 20 formed. Here, the inner terminal portion 21 and the outer terminal portion 22 are pulled out to the same side (upper side) in the axial...

no. 2 Embodiment approach

[0062] The coil terminal structure 200 of the second embodiment is as Figure 5 ~ Figure 7 As shown, it includes: a coil part 210 formed by winding a thin metal plate; .

[0063] The terminal portion 220 of the terminal structure 200 according to the second embodiment is bent such that the tip thereof faces the radial direction (R direction) of the coil portion 210 . Specifically, the coil is bent such that the inner terminal portion 221 formed at the inner peripheral end portion of the coil portion 210 faces radially inward and the outer terminal portion 222 formed at the outer peripheral end portion of the coil portion 210 faces radially outward. The inner peripheral end and the outer peripheral end of the portion 210. Thus, the inner terminal portion 221 has a vertical portion 221 a extending in the axial direction (Z direction) and a horizontal portion 221 b extending in the horizontal direction (radial inner side), and the outer terminal portion 222 has a vertical porti...

no. 3 Embodiment approach

[0067] The coil terminal structure 300 of the third embodiment is as Figure 8 and Figure 9 As shown, it includes: a coil portion 310 formed by winding a metal thin plate; and a terminal portion 320 drawn out in the axial direction (Z direction) of the coil portion 310 by bending the end portion of the coil portion 310 .

[0068] Such as Figure 8 As shown in (a) and (b), the portion S where the end portion of the coil portion 310 is bent in the axial direction (Z direction) is folded back at a predetermined position in the axial direction (Z direction), whereby the terminal portion 320 becomes double structure. In this third embodiment, the inner terminal portion 321 formed at the inner peripheral end portion of the coil portion 310 and the outer terminal portion 322 formed at the outer peripheral end portion of the coil portion 310 each have a double structure. The number of turns of the terminal portion 320 may be appropriately selected in consideration of the strength ...

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PUM

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Abstract

The disclosed coil terminal structure provides uniform strength and electrical properties between a coil and a terminal. Said coil terminal structure allows the use of a poorly-joinable material and makes it possible to provide a terminal unit in a short amount of time, without requiring large-scale equipment. The disclosed coil terminal structure (1) comprises a coil part (10), formed by rolling up a thin metal sheet, and terminal parts (21 and 22), formed by bending the inner and outer ends of the coil part (10) in the axis direction (Z direction) of the coil part (10). A hole (23), used to connect to an external circuit, is formed in each terminal part (21 and 22).

Description

technical field [0001] The present invention relates to a terminal structure of a coil formed by winding a thin metal plate. Background technique [0002] As a coil such as a choke coil or a transformer, a coil configured by winding a copper plate is known (for example, refer to Patent Document 1). This Patent Document 1 does not disclose a connection structure between an end portion of a coil and a terminal portion for external connection. [0003] In electronic devices using large currents, plate-shaped conductors are often used as lead wires for passing current (for example, refer to Patent Document 2). In the welding structure of Patent Document 2, a U-shaped cutout for inserting a wire rod is formed on a plate-shaped conductor, and the plate-shaped conductor and the wire rod are welded with the wire rod inserted into the cutout. . [0004] In addition, although it is not a plate-shaped conductor, various proposals have been made for a connection structure between an ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F27/28
CPCH01F27/2852H01F27/28
Inventor 财津享司真锅知多佳毛笠光容
Owner KOBE STEEL LTD
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