Sumida Corporation

Tomohiro Kajiyama

Mitsugu Kawarai

Juichi Oki

Tsutomu Otsuka

Motomi Takahashi

Shinichi Sakamoto

Teruaki Tanaka

Satoru Yamada

Kazuyuki Kikuchi

Juichi Ooki

A manufacturing method of a coil component comprising the steps of: preparing a coil assembly body in which a coil is attached on a magnetic core and a mold body which is formed with a cavity portion in the inside thereof and which includes at least one opening portion, putting a viscous admixture including magnetic powders and thermosetting resin and the coil assembly body in the cavity portion, pushing the put-in viscous admixture in the mold body, and thermally-curing the pushed-in viscous admixture and forming a magnetic exterior body which covers the coil assembly body.

Manufacturing method of coil component and coil component

An electronic component includes; a magnetic-body core having a plate-shaped portion and a core portion which extends from an upper surface of the plate-shaped portion; a winding wire which includes a wound portion wound by a rectangular wire into an Edgewise winding form and two non-wound portions extending from the wound portion to two distal ends, and the core portion is inserted through the wound portion; and a magnetic exterior body which covers at least the wound portion and the core portion. The two non-wound portions are respectively arranged along a bottom surface and at least one of the side surfaces of the plate-shaped portion. Parts of the two non-wound portions arranged along the bottom surface are electrodes.

Electronic component

A mold apparatus is provided for manufacturing a coil component. The mold apparatus includes a support plate, a die on the support plate, a lid, and a press member that presses the lid toward the support plate. The die has a peripheral side wall defining an opening opposite the support plate. The coil component is placeable in an inner space of the die interior of the side wall. The lid is insertable via the opening into the inner space with an outer peripheral edge of the lid slidably received by the side wall of the die.

Mold apparatus for manufacturing a coil component

A manufacturing method of a coil component including the steps of: assembling and forming a coil assembly body in which a coil is attached to a magnetic-body core; and inputting the coil assembly body and a putty-like admixture including magnetic powders and a thermosetting resin into an inner cylindrical portion of a die, further including the steps of: pressing the admixture which is inputted into the inner cylindrical portion, applying vibration for giving shear force with respect to the admixture which is inputted into the inner cylindrical portion for decreasing the viscosity of the aforesaid admixture, and thermosetting and forming a magnetic cover portion by heating an integrated object comprised of the admixture which was applied with the vibration and the coil assembly body and by thermally-curing the thermosetting resin included in the admixture.

Manufacturing method of coil component and mold apparatus for manufacturing the coil component

A transformer-bobbin including a winding-frame portion constituted by a middle barrel portiona lower flange portionand an upper flange portionwherein there is provided a slit portionwhich notches the terminal bed unitand the lower flange portionand concurrently which extends in the centrally approaching and separating direction toward the middle barrel portionside, and wherein at the slit portionthere is provided a guide wall surfacewhose side on the middle barrel portionside is positioned on the lower flange portion side compared with whose side apart from the middle barrel portion

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Natori, Japan

Tomohiro Kajiyama