Coil component and method for producing same
AssigneePanasonic Intellectual Property Management Co., Ltd.
InventorsIkuya Wakamori, Mutsuyasu Ohtsubo, Manabu Satou
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Abstract
A coil component according to the present invention includes: a magnetic core made of a mixture of a powdery magnetic material and a binding agent and obtained by press forming the mixture; a coil element embedded in the magnetic core and having an end portion protruding from the magnetic core; and a holding member configured to hold the end portion of the coil element. The holding member has a first slit and a second slit which faces the first slit. The end portion of the coil element and the holding member are welded together in an area between the first slit and the second slit.
Claims8
A coil component comprising:
- a magnetic core made of a mixture of a powdery magnetic material and a binding agent and obtained by press forming the mixture;
- a coil element formed by winding a conductive wire, embedded in the magnetic core and having an end portion protruding from the magnetic core;
- and
- a holding member configured to hold the end portion of the coil element, the holding member having a side face, wherein:
- the holding member has a recess portion, at the side face, protruding toward a center of the magnetic core,
- the holding member has, in the side face, a first slit and a second slit which faces the first slit,
- the end portion of the coil element is welded to the recess portion of the holding member and the holding member are welded together in an area between the first slit and the second slit, and
- the recess portion has a convex surface facing the magnetic core and a concave surface opposite to the convex surface, and the end portion of the coil element is welded to the concave surface.
A method for producing a coil component, the method comprising:
- a coil portion forming step of spirally winding a conductive wire to form a coil element;
- a welding step of welding an end portion of the coil element to a holding member made of a processed metal;
- a magnetic core forming step of embedding the coil element in a mixture of a magnetic material and a binding agent and press forming the mixture to form a magnetic core;
- after the welding step, a terminal forming step of bending the holding member to form a terminal,
- wherein the holding member has a recess portion, a first slit and a second slit which faces the first slit,
- the end portion of the coil element and the holding member are welded together to the recess portion at an area between the first slit and the second slit,
- the recess portion has a convex surface facing the magnetic core and a concave surface opposite to the convex surface, and
- the end portion of the coil element is welded to the concave surface in the welding step.
Dependencies are inferred from the claim text.