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Coil component and manufacturing method for same

一种线圈部件、轴线方向的技术，应用在磁芯制造、变压器/电感的零部件、电感/变压器/磁铁制造等方向，能够解决粘合强度降低、未固化部分不均匀、固化剂不能追随等问题，达到提高粘合强度的效果

Active Publication Date: 2019-09-24
MURATA MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] If the above-mentioned thermosetting type one-component epoxy resin is used as Figure 5 If the adhesive 9 shown is used, the liquid epoxy resin spreads due to the capillary phenomenon, but the powdery curing agent cannot follow the capillary phenomenon, so the uncured part in the adhesive 9 may be unevenly present.
The uneven presence of such uncured parts leads to a decrease in bond strength

Method used

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  • Coil component and manufacturing method for same
  • Coil component and manufacturing method for same
  • Coil component and manufacturing method for same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0028] refer to figure 1 The coil component 20 of 1st Embodiment which is one form of this invention is demonstrated.

[0029] like figure 1 As shown, the coil component 20 includes, for example, a drum-shaped iron core 21 made of a magnetic material such as ferrite, or a magnetic material such as resin containing ferrite powder or metal magnetic powder. The drum-shaped core 21 has a winding core portion 22 extending in the axial direction, and first flange portions 23 respectively provided on first and second end portions of the winding core portion 22 opposite to each other in the axial direction. and the second flange portion 24 .

[0030] In addition, the coil component 20 includes a plate-shaped iron core 25 spanned between the first flange portion 23 and the second flange portion 24 . The plate core 25 has a lower main surface 26 and an upper main surface 27 facing in opposite directions. As in the case of the drum-shaped iron core 21, the plate-shaped iron core 25...

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PUM

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Abstract

The invention provides a coil component and a manufacturing method for the same. The bonding strength of the drum-shaped iron core and the plate-shaped iron core is improved. In a coil component, a plate-shaped core (25) is fixed to first and second flanges (23, 24) of a drum-shaped core (21) with an adhesive interposed therebetween in a state that a lower principal surface (26) of the plate-shaped core faces top surfaces (30, 31) of the first and second flanges (23, 24). The adhesive (35) is made of a hardened epoxy-based resin containing dicyandiamide.

Description

technical field [0001] The present invention relates to a coil component and a manufacturing method thereof, and particularly relates to an improvement of an adhesive for bonding a flange portion and a plate-like iron core, wherein the coil component has: a winding core portion on which a wire is wound; The first flange portion and the second flange portion drum-shaped iron core at each end portion of the winding core portion, and the plate-shaped iron core stretched between the first flange portion and the second flange portion. Background technique [0002] For example, Japanese Patent No. 5796603 (Patent Document 1) describes a coil component including: a drum-shaped iron core made of a magnetic material having a winding core portion, a plate-shaped iron core made of a magnetic material, and at least one wire rod wound around the winding core. Figure 5 is based on Patent Document 1 figure 2 The figure made from (a) shows one flange part 2 of the drum-shaped iron core 1...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F17/04H01F27/255H01F27/26H01F27/28H01F41/02
CPCH01F17/04H01F27/255H01F27/263H01F27/2823H01F41/0206H01F41/0246H01F2017/0093C09J163/00H01F27/323H01F27/292H01F17/045H01F3/10C08G59/4021H01F27/29
Inventor 五十岚启雄五十岚勇治
Owner MURATA MFG CO LTD