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Wire-wound coil component and method for manufacturing the wire-wound coil component

A coil component and wire-wound type technology, which is applied in the direction of coil manufacturing, coil, transformer/inductor coil/winding/connection, etc., can solve problems such as difficult application, and achieve the effect of improving fixing force and reducing installation area

Active Publication Date: 2020-03-06
MURATA MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, it is difficult to apply to a wire-wound coil component having a structure in which electrodes are not formed in the core and a wire is wound around the core.

Method used

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  • Wire-wound coil component and method for manufacturing the wire-wound coil component
  • Wire-wound coil component and method for manufacturing the wire-wound coil component
  • Wire-wound coil component and method for manufacturing the wire-wound coil component

Examples

Experimental program
Comparison scheme
Effect test

experiment example -

[0063] Hereinafter, an experimental example in which the external electrodes 54 and 55 are actually formed on the inductor 1 will be described.

[0064] (1) The core body 50 made of Ni-Cu-Zn-based ferrite was irradiated with laser light while reciprocating scanning to form the reduced layer 52 c including the low-resistance portion 43 . Processing conditions are as follows. However, it was confirmed that there is no problem in the wavelength of the irradiated laser light within an arbitrary range of, for example, 532 nm to 10620 nm. In addition, the irradiation interval of the processing condition means the distance of the light spot center of the forward path and the backward path when the laser beam is reciprocally scanned.

[0065] Table 1

[0066] [Laser processing conditions]

[0067] wavelength 1064nm (YVO4) output 14A scanning speed 200mm / s Q switch frequency 20kHz Irradiation interval (pitch) 30μm Spot diameter 70μm ...

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Abstract

The present invention proposes a wire-wound coil component that achieves both a reduction in mounting area and an improvement in fixing force, and a method for manufacturing the wire-wound coil component. A wire-wound coil component (1) includes: a core body (50) having a winding core portion (53) and a flange portion (52); a wire (57) wound around the winding core portion (53); and An external electrode (55), which is electrically connected to the end portion (57a) of the above-mentioned wire (57), the surface of the above-mentioned flange portion (52) has a side surface (52a) and a bottom surface (52b), and the above-mentioned external electrode (55) has: A metal thin film portion (55a) in contact with the side surface (52a), and a thick film electrode portion (55b) in contact with the bottom surface (52b) and composed of a metal composite film.

Description

technical field [0001] The present invention relates to a wire-wound coil component and a method for manufacturing the wire-wound coil component, and particularly relates to a structure of an external electrode of the wire-wound coil component. Background technique [0002] In the past, the method of forming the external electrodes of the wire-wound coil component is generally to apply a conductive paste containing metal and glass to the flange of the core, and sinter to form the base electrode, and then to coat the base electrode by plating. An upper layer electrode is formed thereon (for example, refer to Patent Documents 1 and 2). [0003] Instead of such a conventional electrode forming method, a method of forming an external electrode only by a plating process has been proposed (Patent Document 3). In this method, for example, in a laminated coil component having internal electrodes in a ceramic body, a plurality of ends of the internal electrodes and the end faces of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01F27/29H01F41/10H01F17/00
CPCH01F27/292H01F41/10H01F2017/0093H01F17/04H01F27/2828H01F5/04H01F27/28H01F41/06
Inventor 小林耕平间木祥文石田卓也平井真哉
Owner MURATA MFG CO LTD