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coil parts

A technology of coil parts and flange parts, applied in transformer/inductor parts, electrical components, transformer/inductor coils/windings/connections, etc., can solve problems such as reduced fixing strength, reduce stress and improve heat resistance circular effect

Active Publication Date: 2019-10-11
MURATA MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, the following problems may be caused: the electrical connection between the terminal electrodes 15 to 18 and the conductive part on the mounting substrate becomes an open circuit; and the fixing strength of the coil component 1 to the mounting substrate decreases.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0037] refer to Figure 1 to Figure 6 The coil component 31 of the first embodiment of the present invention will be described. More specifically, the illustrated coil component 31 constitutes a common mode choke coil as an example of a coil component.

[0038] Such as figure 1 and figure 2 As shown, the coil component 31 includes a drum-shaped core 33 having a winding core portion 32 . The drum-shaped core 33 further includes first and second flange portions 34 and 35 provided at respective ends of the winding core portion 32 . The drum core 33 is made of a magnetic material such as ferrite, for example. Such as figure 2 As shown, the winding core portion 32 is, for example, in the shape of a square column, but it may also be in the shape of a column or a polygonal column.

[0039] The flange portions 34 , 35 respectively have inner end surfaces 36 , 37 facing the winding core portion 32 side and positioning respective ends of the winding core portion 32 , and outer ...

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PUM

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Abstract

The present invention provides a coil component comprising: a drum-shaped core having a winding core portion and a pair of flange portions respectively provided at respective ends of the winding core portion; a wire wound around the winding core portion; and The terminal electrode is electrically connected to the end of the wire and fixed to the flange with an adhesive, and the coil component improves heat cycle resistance in a state mounted on a mounting substrate. The terminal electrodes (63-66) have: a base portion (69) extending along the outer end surfaces (38, 39) of the flange portions (34, 35); The conductive part is electrically connected, from the base part (69) along the bottom surface ( 40, 41) Extension. The bent portion (70) and the mounting portion (71) of the terminal electrodes (63-66) are bonded to the flange portions (34, 35) without an adhesive (67).

Description

technical field [0001] The present invention relates to a coil component, and more particularly to a coil component having a structure including a drum-shaped core having a winding core portion around which a wire is wound and flanges respectively provided at respective ends of the winding core portion. part, and the terminal electrode electrically connected to the end of the wire is fixed to the flange part with an adhesive. Background technique [0002] As a technique of interest in the present invention, there is, for example, what is described in JP-A-2015-35473 (Patent Document 1). refer to Figure 9 and Figure 10 The coil component 1 described in Patent Document 1 will be described. [0003] The coil component 1 includes a drum-shaped core 2 and two wires 3 and 4 . The wires 3 and 4 are made of, for example, insulating-coated copper wires. The drum-shaped core 2 has a winding core portion (not shown hidden under the wires 3, 4) and first and second flange portions...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01F17/04H01F27/29
CPCH01F17/045H01F27/292H01F27/24H01F2017/0093H01F27/2828H01F27/2823
Inventor 五十岚启雄村上隆史大西浩司
Owner MURATA MFG CO LTD