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Surface mount inductor and method of making the same

A surface mount, inductor technology, applied in the direction of inductor/transformer/magnet manufacturing, transformer/inductor housing, transformer/inductor coil/winding/connection, etc., can solve the problem of increasing the number of inductor parts and manufacturing costs , to achieve the effect of simplifying processing and manufacturing, reducing the quantity, and reducing the cause of manufacturing defective products

Active Publication Date: 2019-03-15
MURATA MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] This type of inductor has an undesirable increase in part count and manufacturing cost
In addition, such conventional surface mount inductors are fraught with the risk of defects because, since the coil end must be soldered to the metal piece when the coil is connected to the metal frame, the coil end and the parts to be connected to it Contact parts of metal parts are exposed to thermal and mechanical stress

Method used

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  • Surface mount inductor and method of making the same
  • Surface mount inductor and method of making the same
  • Surface mount inductor and method of making the same

Examples

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Embodiment Construction

[0044] Since the embodiments according to the present invention are constructed as described in the claims, and the lead-out ends of the coils are led out to the body-mounted surface so as to form external terminals by the lead-out ends, no metal frame is required and there is no Mechanical stress and thermal stress caused by crimping or welding when connecting the coil and the metal frame together, so there is no risk of resistance increase due to the state of connection between the coil and the metal frame or the connection part of the metal frame to the coil .

[0045] Furthermore, according to embodiments of the present invention, since the winding axis is parallel to the body mount surface, the directionality of the inductor is avoided.

[0046] Furthermore, according to an embodiment of the present invention, the coil is configured to have a first winding portion wire and a second winding portion wire, the wire has a rectangular cross section, the first winding portion i...

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PUM

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Abstract

A surface-mount inductor including a coil formed by winding a rectangular wire, and a mounting body for accommodating the coil, the coil having first rolls of the wire wound in a two-roll arrangement, second rolls being wound at positions shifted away from the first rolls along the winding axis, and lead ends brought out from the outermost turn of the second rolls; the mounting body containing a protruded portion for inserting into the winding axis of the coil, and a pair of bottomed magnetic cores having slits respectively, the protruded portion being inserted into the winding axis of the coil so that the mounting body is embedded in the coil with sealant to incorporate the magnetic cores with the coil and to expose the core mounting face of the magnetic cores therefrom, as well as a method for manufacturing the same.

Description

technical field [0001] The present invention relates to a surface mount inductor including a coil formed by winding a wire and a body for accommodating and mounting the coil, and a method of manufacturing the same. Background technique [0002] In conventional surface mount inductors, there are Figure 8 The inductor shown has a coil 41 formed by winding a wire of rectangular section in such a manner that the wide surface of the wire is directed in a direction perpendicular to the winding axis of the coil, and the lead end 41d is connected to the coil 41 to form a molded body 42, whereby the metal frame 45 exposed from the molded body 42 is folded along the molded body 42 to form an external terminal (JP2011-243703). [0003] This type of inductor has an undesirable increase in part count and manufacturing cost. In addition, such conventional surface mount inductors are fraught with the risk of defects because, since the coil end must be soldered to the metal piece when the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01F17/04H01F27/30H01F41/00
CPCH01F27/292H01F27/02
Inventor 北村和久
Owner MURATA MFG CO LTD