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Coil component

A coil component and core technology, which is applied in coil manufacturing, transformer/inductor parts, electrical components, etc., can solve problems such as breakage of connecting parts, reduction of mechanical strength of winding core 2, etc., to improve mechanical strength, Effect of promoting miniaturization and ensuring mechanical strength

Active Publication Date: 2020-06-30
MURATA MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] However, when the winding core 2 and the plate-shaped core 4 are composed of a sintered body of magnetic material powder as described above, the reduction in the mechanical strength of the winding core 2 becomes a problem as the size of the coil component 1 progresses.
It can be seen that the breakage due to the reduction of mechanical strength tends to occur in the thinned winding core
It can be seen that breakage is particularly likely to occur at the connecting portion of the core portion connected to the flange portion.

Method used

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Examples

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Embodiment Construction

[0023] refer to Figure 1 ~ Figure 4 , the coil component 21 according to the first embodiment of the present invention will be described. The illustrated coil component 21 constitutes, for example, a common mode choke coil.

[0024] The coil component 21 includes a winding core 23 having a winding core 22 . The winding core portion 23 includes a first flange portion 24 and a second flange portion 25 respectively provided at opposite ends in the axial direction of the winding core portion 22 .

[0025] The coil component 21 further includes a plate-shaped core 26 . The plate-shaped core portion 26 has a main surface 27 facing the winding core portion 22, the first flange portion 24, and the second flange portion 25 of the winding core portion 23, and is bridged between the first flange portion 24 and the second flange portion 25. The state between the second flange parts 25 is passed through the adhesive 28 (refer to Figure 4 ) is fixed with respect to the winding core 23...

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PUM

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Abstract

When a winding core provided in a coil component is configured from a sintered body of a magnetic powder, the mechanical strength of the winding core decreases with the development of miniaturizationof the coil component, and in particular, breakage is likely to occur at a connection portion where the winding core is connected to a flange portion. The coil component (21) is provided with: a winding core (23) having a coiling core part (22), a first flange part (24), and a second flange part (25); and a plate-shaped core part (26) having a main surface (27) facing the coiling core part, the first flange part, and the second flange part, the plate-shaped core part (26) being fixed to the winding core via an adhesive (28) in a state of being bridged between the first flange part and the second flange part; in the coil component, the first flange part and the second flange part each have a top surface (29A, 29B) facing the main surface of the plate-shaped core part, and recesses (43A, 43B) are provided in the top surfaces. Furthermore, the protrusions (44A, 44B) may be provided in part of the region in which the recesses are provided.

Description

technical field [0001] The present invention relates to a coil component, and in particular to a coil component comprising: a winding core and a plate-shaped core stretched between a first flange and a second flange, the winding core having: There is a winding core portion of the wire rod, and a first flange portion and a second flange portion respectively provided on opposite ends of the winding core portion. Background technique [0002] As a technique relevant to this invention, it is described in Unexamined-Japanese-Patent No. 2014-99587 (patent document 1), for example. Figure 6 is based on Patent Document 1 figure 2 (a) shows the first flange portion 3 and the plate-shaped core portion 4 of the winding core portion 2 of the coil component 1 . [0003] The winding core 2 has a winding core around which a wire rod is wound, and a first flange and a second flange respectively provided at respective ends of the winding core. Figure 6 In the drawing, the first flange pa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F27/26H01F17/04
CPCH01F27/263H01F17/04H01F17/045H01F27/2823H01F27/38H01F3/10H01F41/06H01F27/292H01F41/0246
Inventor 高桥克志
Owner MURATA MFG CO LTD