Coil component

A coil component and coil technology, applied in the direction of transformer/inductor coil/winding/connection, inductor with magnetic core, etc., to achieve good wettability, eliminate height deviation, and improve flatness

Active Publication Date: 2014-04-16
TDK CORPARATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if the front winding part is in contact with the terminal surface of the terminal metal fitting 21, when the coating film on the surface of the terminal metal fitting is melted by the heat during thermocompression bonding, the winding wire is fixed on the surface of the terminal metal fitting, and there is a problem that well cut off to remove the problem

Method used

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Embodiment Construction

[0037] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.

[0038] figure 1 It is a schematic perspective view showing the external configuration of the surface mount coil component according to the first embodiment of the present invention. in addition, figure 2 yes figure 1 An exploded perspective view of the coil assembly, image 3 means to make figure 1 A rough perspective view of the state where the coil part is turned upside down.

[0039] Such as Figure 1 ~ Figure 3 As shown, this coil component 1 includes a drum core 2 , a plate-shaped core 5 , six terminal metal fittings 6 a to 6 f , and a coil 7 made of a wire wound around the drum core 2 . Although not particularly limited, the coil component 1 is a surface mount type pulse transformer, and its size is about 4.5 mm×3.2 mm×2.6 to 2.8 mm, or about 3.2 mm×3.2 mm×2.8 to 2.9 mm.

[0040] Drum core 2 is made of, for example, a magnetic materi...

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PUM

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Abstract

The invention provides a coil component which can remove height difference of the terminal surface of a terminal metal piece caused by thickness difference of a bonding agent, and has the characteristics of good installation and wiring and high reliability. The coil component (1) possesses a coil (7) coiled by wires; a drum type core (2) supporting the coil (7); terminal metal pieces (6a-6f) connecting to the terminals of the coil (7); and a binding agent (11B) used for bonding the terminal metal pieces to the flange parts (4A,4B) of the drum type core (2). The drum type core (2) possesses the bottom surface (SB) of a flange part becoming an installation surface; each metal piece possesses a bottom surface part (TB) located on the surface of the flange part of the drum type core (2). The bottom surface (SB) of each flange part is provided with a jump formed by an upper segment surface (SB2) and a lower segment surface (SB1). The bottom surface part (TB) of the terminal metal piece is in direct contact with the upper segment surface (SB2); the gap (d1) between the bottom surface part (TB) of the terminal metal piece and the lower segment surface (SB1) is filled with the first binding agent (11B). Part of the binding agent (11B) is filled in the groove (SB3) formed on the lower segment surface (SB1) just below the jump.

Description

technical field [0001] The present invention relates to a coil component, and in particular, to a terminal electrode structure of a surface mount type coil component. Background technique [0002] Along with the miniaturization of electronic equipment in recent years, high-density mounting of coil components is also required. For example, Patent Document 1 discloses a surface-mount coil component capable of high-density mounting. [0003] This coil component includes: a core (core) having a winding core portion and a flange portion; an insulating case (case) forming a housing space for the core; and a terminal metal mechanically fixed to the case in a state where at least a part is exposed to the outside. A piece; a coil (winding) that is wired with a terminal metal piece and wound around a winding core via a case. The accommodation space of the core is partitioned including a bottom surface approximately parallel to the mounting surface, and has a lower surface of the cor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F17/04H01F27/29
Inventor 高木信雄土田节佐佐木秀树
Owner TDK CORPARATION
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