US 8,508,322 B2Granted

Magnetic element

AssigneeSumida Corporation

InventorsYuichi Yamada, Takayuki Yamaguchi

Life of this patent

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Abstract

Disclosed is a magnetic element that makes it possible to prevent a coil terminal from being positioned on a ring mount. The magnetic element comprises a first core member, coils, which are disposed in a second core member and a bobbin, and a first mount, on which the first core member is mounted, and possesses a second mount, which is disposed rising up from, and positioned between both edges of, the first mount, and on which the second core member is mounted, and is further equipped with a base, with multiple terminals disposed protruding from the sides thereof. Furthermore, a protrusion is disposed at the edge of the second mount, extending in the direction moving away from said second mount, and this protrusion is smaller than the thickness dimension of the base, and a terminal is positioned on the back surface of the protrusion on the opposite side from the side on which the second core member is mounted, and then bound to the terminals.

Claims3

Dependent claims

A magnetic element comprising:

a first core member having a bobbin;
a second core member so placed as to face the first core member in a whole range around an outer circumference of the first core member;
a coil placed by winding a lead wire and placed at the bobbin;
and
a base having a first mount portion for placing the first core member, a second mount portion for placing the second core member and being raised higher than the first mount portion and positioned between both end portions, and a plurality of terminals protruding from a side of the base;
wherein the end portion of the second mount portion has a protrusion lengthening in a direction apart from the second mount portion, and the protrusion is sized smaller than the thickness of the base;
and
a coil end part of the coil is wound on the terminal after the coil end part of the coil is placed at a reverse surface of the protrusion opposite to a side for placing the second core member;
wherein the end of the second mount portion in the base has a concave portion recessed in a direction toward the opposite side of the base from one side of the base;
the end of the coil is inserted into the concave portion at the side opposite to the one side of the concave portion then the one side of the concave portion, and
the protrusion is provided in a state of covering over the concave portion from the side for placing the second core member.

8 more elements

Dependencies are inferred from the claim text.

Facts

Application: 13/147,033Filed 28 Jan 2010
Priority: JP 2009-0226663 Feb 2009
Published: US 2011/0291783 A11 Dec 2011
Granted: 13 Aug 2013
Term ends: Not estimatedThe source records don’t support an estimate.

Classification7 codes

H01F 17/045
With magnetic core: with core of cylindric geometry and coil wound along its longitudinal axis, i.e. rod or drum core
H01F 27/292
Terminals; Tapping arrangements for signal inductances: surface mounted devices
H01F 3/10
Cores, Yokes, or armatures: composite arrangements of magnetic circuits
H01F 27/065
Mounting, supporting, or suspending transformers, reactors, or choke coils not being of the signal type: mounting on printed circuit boards